256544812 has 6 divisors (see below), whose sum is σ = 448953428. Its totient is φ = 128272404.

The previous prime is 256544801. The next prime is 256544819. The reversal of 256544812 is 218445652.

It is not an unprimeable number, because it can be changed into a prime (256544819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32068098 + ... + 32068105.

Almost surely, 2^256544812 is an apocalyptic number.

It is an amenable number.

256544812 is a deficient number, since it is larger than the sum of its proper divisors (192408616).

256544812 is a wasteful number, since it uses less digits than its factorization.

256544812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64136207 (or 64136205 counting only the distinct ones).

The product of its digits is 76800, while the sum is 37.

The square root of 256544812 is about 16017.0163263949. The cubic root of 256544812 is about 635.4105365999.

The spelling of 256544812 in words is "two hundred fifty-six million, five hundred forty-four thousand, eight hundred twelve".