256857350 has 48 divisors (see below), whose sum is σ = 504878400. Its totient is φ = 97063680.

The previous prime is 256857347. The next prime is 256857407. The reversal of 256857350 is 53758652.

It is a junction number, because it is equal to n+sod(n) for n = 256857298 and 256857307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66266 + ... + 70034.

It is an arithmetic number, because the mean of its divisors is an integer number (10518300).

Almost surely, 2^256857350 is an apocalyptic number.

256857350 is a deficient number, since it is larger than the sum of its proper divisors (248021050).

256857350 is a wasteful number, since it uses less digits than its factorization.

256857350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3857 (or 3852 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 256857350 is about 16026.7697930681. The cubic root of 256857350 is about 635.6684634011.

The spelling of 256857350 in words is "two hundred fifty-six million, eight hundred fifty-seven thousand, three hundred fifty".