256055600 has 30 divisors (see below), whose sum is σ = 615174540. Its totient is φ = 102422080.

The previous prime is 256055599. The next prime is 256055641. The reversal of 256055600 is 6550652.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 319670 + ... + 320469.

It is an arithmetic number, because the mean of its divisors is an integer number (20505818).

Almost surely, 2^256055600 is an apocalyptic number.

256055600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256055600 is an abundant number, since it is smaller than the sum of its proper divisors (359118940).

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

256055600 is a wasteful number, since it uses less digits than its factorization.

256055600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640157 (or 640146 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 256055600 is about 16001.7374056694. The cubic root of 256055600 is about 635.0063859486.

The spelling of 256055600 in words is "two hundred fifty-six million, fifty-five thousand, six hundred".