256772652 has 24 divisors (see below), whose sum is σ = 601981632. Its totient is φ = 85184400.

The previous prime is 256772647. The next prime is 256772671. The reversal of 256772652 is 256277652.

It is a super-2 number, since 2×256772652² = 131864389630226208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48174 + ... + 53237.

It is an arithmetic number, because the mean of its divisors is an integer number (25082568).

Almost surely, 2^256772652 is an apocalyptic number.

It is an amenable number.

256772652 is an abundant number, since it is smaller than the sum of its proper divisors (345208980).

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

256772652 is a wasteful number, since it uses less digits than its factorization.

256772652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101629 (or 101627 counting only the distinct ones).

The product of its digits is 352800, while the sum is 42.

The square root of 256772652 is about 16024.1271837189. The cubic root of 256772652 is about 635.5985857480.

The spelling of 256772652 in words is "two hundred fifty-six million, seven hundred seventy-two thousand, six hundred fifty-two".