256672296 has 24 divisors (see below), whose sum is σ = 695154330. Its totient is φ = 85557408.

The previous prime is 256672291. The next prime is 256672303. The reversal of 256672296 is 692276652.

It can be written as a sum of positive squares in only one way, i.e., 240560100 + 16112196 = 15510^2 + 4014^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (256672291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1782375 + ... + 1782518.

Almost surely, 2^256672296 is an apocalyptic number.

It is an amenable number.

256672296 is an abundant number, since it is smaller than the sum of its proper divisors (438482034).

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

256672296 is a wasteful number, since it uses less digits than its factorization.

256672296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564905 (or 3564898 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 256672296 is about 16020.9954746888. The cubic root of 256672296 is about 635.5157700185.

The spelling of 256672296 in words is "two hundred fifty-six million, six hundred seventy-two thousand, two hundred ninety-six".