256474470 has 64 divisors (see below), whose sum is σ = 726183936. Its totient is φ = 56730240.

The previous prime is 256474457. The next prime is 256474481. The reversal of 256474470 is 74474652.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13189 + ... + 26208.

It is an arithmetic number, because the mean of its divisors is an integer number (11346624).

Almost surely, 2^256474470 is an apocalyptic number.

256474470 is an abundant number, since it is smaller than the sum of its proper divisors (469709466).

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

256474470 is a wasteful number, since it uses less digits than its factorization.

256474470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39445.

The product of its (nonzero) digits is 188160, while the sum is 39.

The square root of 256474470 is about 16014.8203236877. The cubic root of 256474470 is about 635.3524569045.

The spelling of 256474470 in words is "two hundred fifty-six million, four hundred seventy-four thousand, four hundred seventy".