256851084 has 48 divisors (see below), whose sum is σ = 694335488. Its totient is φ = 72379008.

The previous prime is 256851073. The next prime is 256851103. The reversal of 256851084 is 480158652.

256851084 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

256851084 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14812 + ... + 27075.

Almost surely, 2^256851084 is an apocalyptic number.

It is an amenable number.

256851084 is an abundant number, since it is smaller than the sum of its proper divisors (437484404).

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

256851084 is a wasteful number, since it uses less digits than its factorization.

256851084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41974 (or 41972 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 256851084 is about 16026.5743064449. The cubic root of 256851084 is about 635.6632943440.

The spelling of 256851084 in words is "two hundred fifty-six million, eight hundred fifty-one thousand, eighty-four".