256748604 has 24 divisors (see below), whose sum is σ = 684663168. Its totient is φ = 73356720.

The previous prime is 256748599. The next prime is 256748647. The reversal of 256748604 is 406847652.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

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, 1528182 + ... + 1528349.

It is an arithmetic number, because the mean of its divisors is an integer number (28527632).

Almost surely, 2^256748604 is an apocalyptic number.

It is an amenable number.

256748604 is an abundant number, since it is smaller than the sum of its proper divisors (427914564).

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

256748604 is a wasteful number, since it uses less digits than its factorization.

256748604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3056545 (or 3056543 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 42.

The square root of 256748604 is about 16023.3767976666. The cubic root of 256748604 is about 635.5787428352.

The spelling of 256748604 in words is "two hundred fifty-six million, seven hundred forty-eight thousand, six hundred four".