256488534 has 12 divisors (see below), whose sum is σ = 555725196. Its totient is φ = 85496172.

The previous prime is 256488527. The next prime is 256488559. The reversal of 256488534 is 435884652.

256488534 is a `hidden beast` number, since 2 + 564 + 8 + 85 + 3 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 256488534.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7124664 + ... + 7124699.

It is an arithmetic number, because the mean of its divisors is an integer number (46310433).

Almost surely, 2^256488534 is an apocalyptic number.

256488534 is an abundant number, since it is smaller than the sum of its proper divisors (299236662).

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

256488534 is a wasteful number, since it uses less digits than its factorization.

256488534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14249371 (or 14249368 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The square root of 256488534 is about 16015.2594109493. The cubic root of 256488534 is about 635.3640700599.

The spelling of 256488534 in words is "two hundred fifty-six million, four hundred eighty-eight thousand, five hundred thirty-four".