256206984 has 32 divisors (see below), whose sum is σ = 698747040. Its totient is φ = 77638400.

The previous prime is 256206931. The next prime is 256207009. The reversal of 256206984 is 489602652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484977 + ... + 485504.

It is an arithmetic number, because the mean of its divisors is an integer number (21835845).

Almost surely, 2^256206984 is an apocalyptic number.

256206984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

256206984 is an abundant number, since it is smaller than the sum of its proper divisors (442540056).

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

256206984 is a wasteful number, since it uses less digits than its factorization.

256206984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970501 (or 970497 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 256206984 is about 16006.4669430827. The cubic root of 256206984 is about 635.1315031347.

The spelling of 256206984 in words is "two hundred fifty-six million, two hundred six thousand, nine hundred eighty-four".