304 (number)

← 303 304 305 →
List of numbers ; Integers ; ← 0 100 200 300 400 500 600 700 800 900 →
Cardinal	three hundred four
Ordinal	304th; (three hundred fourth)
Factorization	24 × 19
Divisors	1, 2, 4, 8, 16, 19, 38, 76, 152, 304
Greek numeral	ΤΔ´
Roman numeral	CCCIV
Binary	1001100002
Ternary	1020213
Senary	12246
Octal	4608
Duodecimal	21412
Hexadecimal	13016

Last updated June 06, 2024

304 is the natural number following 303 and preceding 305.

In mathematics

304 is an even composite number with two prime factors.^[1]
304 is the sum of consecutive primes in two different ways:^[2] It is the sum of 41+43+47+53+59+61 and of 23+29+31+37+41+43+47+53.
304 is a primitive semiperfect number meaning that it is a semiperfect number that is not divisible by any other semiperfect number.^[3]
304 is an untouchable number meaning that it is not equal to the sum of any number’s proper divisors.^[4]
304 is a nontotient number meaning that it is an even number where phi(x) cannot result in that number.^[5]

Related Research Articles

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34 (thirty-four) is the natural number following 33 and preceding 35.

68 (sixty-eight) is the natural number following 67 and preceding 69. It is an even number.

300 is the natural number following 299 and preceding 301.

400 is the natural number following 399 and preceding 401.

500 is the natural number following 499 and preceding 501.

700 is the natural number following 699 and preceding 701.

600 is the natural number following 599 and preceding 601.

800 is the natural number following 799 and preceding 801.

900 is the natural number following 899 and preceding 901. It is the square of 30 and the sum of Euler's totient function for the first 54 positive integers. In base 10 it is a Harshad number. It is also the first number to be the square of a sphenic number.

146 is the natural number following 145 and preceding 147.

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302 is the natural number following 301 and preceding 303.

References

↑ "Facts about the integer". mathworld.wolfram.com.
↑ Sloane, N. J. A. (ed.). "SequenceA067372(Integers expressible as the sum of (at least two) consecutive primes in at least 2 ways)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
↑ Sloane, N. J. A. (ed.). "SequenceA006036(Primitive pseudoperfect numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
↑ Sloane, N. J. A. (ed.). "SequenceA005114(Untouchable numbers, also called non aliquot numbers: impossible values for the sum of aliquot parts function (A001065))". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
↑ Sloane, N. J. A. (ed.). "SequenceA005277(Nontotients: even numbers k such that phi(m) = k has no solution)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.

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[1] "Facts about the integer". mathworld.wolfram.com.

[2] Sloane, N. J. A. (ed.). "SequenceA067372(Integers expressible as the sum of (at least two) consecutive primes in at least 2 ways)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.

[3] Sloane, N. J. A. (ed.). "SequenceA006036(Primitive pseudoperfect numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.

[4] Sloane, N. J. A. (ed.). "SequenceA005114(Untouchable numbers, also called non aliquot numbers: impossible values for the sum of aliquot parts function (A001065))". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.

[5] Sloane, N. J. A. (ed.). "SequenceA005277(Nontotients: even numbers k such that phi(m) = k has no solution)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.

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