256902734 has 16 divisors (see below), whose sum is σ = 422230320. Its totient is φ = 116261760.

The previous prime is 256902733. The next prime is 256902749. The reversal of 256902734 is 437209652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256902731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20459 + ... + 30534.

It is an arithmetic number, because the mean of its divisors is an integer number (26389395).

Almost surely, 2^256902734 is an apocalyptic number.

256902734 is a deficient number, since it is larger than the sum of its proper divisors (165327586).

256902734 is a wasteful number, since it uses less digits than its factorization.

256902734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51235.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 256902734 is about 16028.1856116031. The cubic root of 256902734 is about 635.7058998467.

The spelling of 256902734 in words is "two hundred fifty-six million, nine hundred two thousand, seven hundred thirty-four".