256176672 has 48 divisors (see below), whose sum is σ = 712024992. Its totient is φ = 80368640.

The previous prime is 256176667. The next prime is 256176707. The reversal of 256176672 is 276671652.

It is a tau number, because it is divible by the number of its divisors (48).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 76854 + ... + 80117.

It is an arithmetic number, because the mean of its divisors is an integer number (14833854).

Almost surely, 2^256176672 is an apocalyptic number.

It is an amenable number.

256176672 is an abundant number, since it is smaller than the sum of its proper divisors (455848320).

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

256176672 is a wasteful number, since it uses less digits than its factorization.

256176672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157001 (or 156993 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The square root of 256176672 is about 16005.5200477835. The cubic root of 256176672 is about 635.1064545520.

The spelling of 256176672 in words is "two hundred fifty-six million, one hundred seventy-six thousand, six hundred seventy-two".