256798038 has 32 divisors (see below), whose sum is σ = 598046976. Its totient is φ = 71985888.

The previous prime is 256798007. The next prime is 256798043. The reversal of 256798038 is 830897652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55456 + ... + 59907.

It is an arithmetic number, because the mean of its divisors is an integer number (18688968).

Almost surely, 2^256798038 is an apocalyptic number.

256798038 is an abundant number, since it is smaller than the sum of its proper divisors (341248938).

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

256798038 is a wasteful number, since it uses less digits than its factorization.

256798038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115428.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 256798038 is about 16024.9192821680. The cubic root of 256798038 is about 635.6195313508.

The spelling of 256798038 in words is "two hundred fifty-six million, seven hundred ninety-eight thousand, thirty-eight".