256675430 has 32 divisors (see below), whose sum is σ = 504709920. Its totient is φ = 93208320.

The previous prime is 256675417. The next prime is 256675451. The reversal of 256675430 is 34576652.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

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, 121826 + ... + 123914.

It is an arithmetic number, because the mean of its divisors is an integer number (15772185).

Almost surely, 2^256675430 is an apocalyptic number.

256675430 is a deficient number, since it is larger than the sum of its proper divisors (248034490).

256675430 is a wasteful number, since it uses less digits than its factorization.

256675430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3224.

The product of its (nonzero) digits is 151200, while the sum is 38.

The square root of 256675430 is about 16021.0932835434. The cubic root of 256675430 is about 635.5183565830.

The spelling of 256675430 in words is "two hundred fifty-six million, six hundred seventy-five thousand, four hundred thirty".