256947404 has 12 divisors (see below), whose sum is σ = 513894864. Its totient is φ = 110120304.

The previous prime is 256947377. The next prime is 256947413. The reversal of 256947404 is 404749652.

256947404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

256947404 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4588319 + ... + 4588374.

It is an arithmetic number, because the mean of its divisors is an integer number (42824572).

Almost surely, 2^256947404 is an apocalyptic number.

It is an amenable number.

256947404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

256947404 is a wasteful number, since it uses less digits than its factorization.

256947404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176704 (or 9176702 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 256947404 is about 16029.5790337738. The cubic root of 256947404 is about 635.7427430213.

The spelling of 256947404 in words is "two hundred fifty-six million, nine hundred forty-seven thousand, four hundred four".