256472330 has 32 divisors (see below), whose sum is σ = 468951120. Its totient is φ = 100979200.

The previous prime is 256472329. The next prime is 256472389. The reversal of 256472330 is 33274652.

256472330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 255072841 + 1399489 = 15971^2 + 1183^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198326 + ... + 199614.

Almost surely, 2^256472330 is an apocalyptic number.

256472330 is a deficient number, since it is larger than the sum of its proper divisors (212478790).

256472330 is a wasteful number, since it uses less digits than its factorization.

256472330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594.

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 256472330 is about 16014.7535104353. The cubic root of 256472330 is about 635.3506897916.

The spelling of 256472330 in words is "two hundred fifty-six million, four hundred seventy-two thousand, three hundred thirty".