256772208 has 80 divisors (see below), whose sum is σ = 827018496. Its totient is φ = 66693120.

The previous prime is 256772179. The next prime is 256772239. The reversal of 256772208 is 802277652.

256772208 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31041 + ... + 38432.

Almost surely, 2^256772208 is an apocalyptic number.

256772208 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

256772208 is an abundant number, since it is smaller than the sum of its proper divisors (570246288).

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

256772208 is a wasteful number, since it uses less digits than its factorization.

256772208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69502 (or 69496 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 256772208 is about 16024.1133296042. The cubic root of 256772208 is about 635.5982193980.

The spelling of 256772208 in words is "two hundred fifty-six million, seven hundred seventy-two thousand, two hundred eight".