256039470 has 48 divisors (see below), whose sum is σ = 674839152. Its totient is φ = 67340160.

The previous prime is 256039453. The next prime is 256039489. The reversal of 256039470 is 74930652.

256039470 is a `hidden beast` number, since 2 + 5 + 603 + 9 + 47 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12916 + ... + 26055.

It is an arithmetic number, because the mean of its divisors is an integer number (14059149).

Almost surely, 2^256039470 is an apocalyptic number.

256039470 is an abundant number, since it is smaller than the sum of its proper divisors (418799682).

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

256039470 is a wasteful number, since it uses less digits than its factorization.

256039470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39057 (or 39054 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 256039470 is about 16001.2333899609. The cubic root of 256039470 is about 634.9930517767.

The spelling of 256039470 in words is "two hundred fifty-six million, thirty-nine thousand, four hundred seventy".