256212208 has 40 divisors (see below), whose sum is σ = 568940768. Its totient is φ = 109492992.

The previous prime is 256212137. The next prime is 256212223. The reversal of 256212208 is 802212652.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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, 38710 + ... + 44842.

Almost surely, 2^256212208 is an apocalyptic number.

256212208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

256212208 is an abundant number, since it is smaller than the sum of its proper divisors (312728560).

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

256212208 is a wasteful number, since it uses less digits than its factorization.

256212208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6521 (or 6515 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 256212208 is about 16006.6301262945. The cubic root of 256212208 is about 635.1358198325.

The spelling of 256212208 in words is "two hundred fifty-six million, two hundred twelve thousand, two hundred eight".