256355018 has 16 divisors (see below), whose sum is σ = 395682144. Its totient is φ = 124474320.

The previous prime is 256355009. The next prime is 256355023. The reversal of 256355018 is 810553652.

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, 39221 + ... + 45287.

It is an arithmetic number, because the mean of its divisors is an integer number (24730134).

Almost surely, 2^256355018 is an apocalyptic number.

256355018 is a deficient number, since it is larger than the sum of its proper divisors (139327126).

256355018 is a wasteful number, since it uses less digits than its factorization.

256355018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6677.

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 256355018 is about 16011.0904687969. The cubic root of 256355018 is about 635.2538039311.

The spelling of 256355018 in words is "two hundred fifty-six million, three hundred fifty-five thousand, eighteen".