256329365 has 16 divisors (see below), whose sum is σ = 321608448. Its totient is φ = 195757056.

The previous prime is 256329317. The next prime is 256329371. The reversal of 256329365 is 563923652.

It is a cyclic number.

It is not a de Polignac number, because 256329365 - 2⁸ = 256329109 is a prime.

It is a super-2 number, since 2×256329365² = 131409486722606450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64424 + ... + 68286.

It is an arithmetic number, because the mean of its divisors is an integer number (20100528).

Almost surely, 2^256329365 is an apocalyptic number.

It is an amenable number.

256329365 is a deficient number, since it is larger than the sum of its proper divisors (65279083).

256329365 is a wasteful number, since it uses less digits than its factorization.

256329365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4468.

The product of its digits is 291600, while the sum is 41.

The square root of 256329365 is about 16010.2893477913. The cubic root of 256329365 is about 635.2326136438.

The spelling of 256329365 in words is "two hundred fifty-six million, three hundred twenty-nine thousand, three hundred sixty-five".