256887024 has 40 divisors (see below), whose sum is σ = 666004992. Its totient is φ = 85321920.

The previous prime is 256886963. The next prime is 256887061. The reversal of 256887024 is 420788652.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4129 + ... + 23039.

Almost surely, 2^256887024 is an apocalyptic number.

256887024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256887024 is an abundant number, since it is smaller than the sum of its proper divisors (409117968).

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

256887024 is a wasteful number, since it uses less digits than its factorization.

256887024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19205 (or 19199 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 256887024 is about 16027.6955299257. The cubic root of 256887024 is about 635.6929414492.

The spelling of 256887024 in words is "two hundred fifty-six million, eight hundred eighty-seven thousand, twenty-four".