256152768 has 28 divisors (see below), whose sum is σ = 677738040. Its totient is φ = 85384192.

The previous prime is 256152761. The next prime is 256152781. The reversal of 256152768 is 867251652.

It is a super-2 number, since 2×256152768² = 131228481108123648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256152761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 666873 + ... + 667256.

It is an arithmetic number, because the mean of its divisors is an integer number (24204930).

Almost surely, 2^256152768 is an apocalyptic number.

It is an amenable number.

256152768 is an abundant number, since it is smaller than the sum of its proper divisors (421585272).

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

256152768 is a wasteful number, since it uses less digits than its factorization.

256152768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1334144 (or 1334134 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 256152768 is about 16004.7732879913. The cubic root of 256152768 is about 635.0866998820.

The spelling of 256152768 in words is "two hundred fifty-six million, one hundred fifty-two thousand, seven hundred sixty-eight".