256928718 has 32 divisors (see below), whose sum is σ = 544906656. Its totient is φ = 80483328.

The previous prime is 256928681. The next prime is 256928731. The reversal of 256928718 is 817829652.

It is a super-2 number, since 2×256928718² = 132024732266247048, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 85530 + ... + 88482.

It is an arithmetic number, because the mean of its divisors is an integer number (17028333).

Almost surely, 2^256928718 is an apocalyptic number.

256928718 is an abundant number, since it is smaller than the sum of its proper divisors (287977938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256928718 is a wasteful number, since it uses less digits than its factorization.

256928718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828.

The product of its digits is 483840, while the sum is 48.

The square root of 256928718 is about 16028.9961632037. The cubic root of 256928718 is about 635.7273315963.

The spelling of 256928718 in words is "two hundred fifty-six million, nine hundred twenty-eight thousand, seven hundred eighteen".