256918794 has 32 divisors (see below), whose sum is σ = 562083840. Its totient is φ = 77641200.

The previous prime is 256918769. The next prime is 256918813. The reversal of 256918794 is 497819652.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19879 + ... + 30149.

It is an arithmetic number, because the mean of its divisors is an integer number (17565120).

Almost surely, 2^256918794 is an apocalyptic number.

256918794 is an abundant number, since it is smaller than the sum of its proper divisors (305165046).

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

256918794 is a wasteful number, since it uses less digits than its factorization.

256918794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10666.

The product of its digits is 1088640, while the sum is 51.

The square root of 256918794 is about 16028.6865962249. The cubic root of 256918794 is about 635.7191463958.

The spelling of 256918794 in words is "two hundred fifty-six million, nine hundred eighteen thousand, seven hundred ninety-four".