256480672 has 24 divisors (see below), whose sum is σ = 577082016. Its totient is φ = 109920192.

The previous prime is 256480667. The next prime is 256480673. The reversal of 256480672 is 276084652.

It is not an unprimeable number, because it can be changed into a prime (256480673) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 572278 + ... + 572725.

It is an arithmetic number, because the mean of its divisors is an integer number (24045084).

Almost surely, 2^256480672 is an apocalyptic number.

It is an amenable number.

256480672 is an abundant number, since it is smaller than the sum of its proper divisors (320601344).

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

256480672 is a wasteful number, since it uses less digits than its factorization.

256480672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145020 (or 1145012 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 256480672 is about 16015.0139556605. The cubic root of 256480672 is about 635.3575781734.

The spelling of 256480672 in words is "two hundred fifty-six million, four hundred eighty thousand, six hundred seventy-two".