256851044 has 12 divisors (see below), whose sum is σ = 473146800. Its totient is φ = 121666248.

The previous prime is 256851043. The next prime is 256851047. The reversal of 256851044 is 440158652.

It is a junction number, because it is equal to n+sod(n) for n = 256850995 and 256851013.

It is not an unprimeable number, because it can be changed into a prime (256851043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1689734 + ... + 1689885.

It is an arithmetic number, because the mean of its divisors is an integer number (39428900).

Almost surely, 2^256851044 is an apocalyptic number.

It is an amenable number.

256851044 is a deficient number, since it is larger than the sum of its proper divisors (216295756).

256851044 is a wasteful number, since it uses less digits than its factorization.

256851044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3379642 (or 3379640 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 256851044 is about 16026.5730585175. The cubic root of 256851044 is about 635.6632613462.

The spelling of 256851044 in words is "two hundred fifty-six million, eight hundred fifty-one thousand, forty-four".