256413718 has 16 divisors (see below), whose sum is σ = 419832000. Its totient is φ = 116483400.

The previous prime is 256413709. The next prime is 256413719. The reversal of 256413718 is 817314652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256413719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71533 + ... + 75031.

It is an arithmetic number, because the mean of its divisors is an integer number (26239500).

Almost surely, 2^256413718 is an apocalyptic number.

256413718 is a deficient number, since it is larger than the sum of its proper divisors (163418282).

256413718 is a wasteful number, since it uses less digits than its factorization.

256413718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6843.

The product of its digits is 40320, while the sum is 37.

The square root of 256413718 is about 16012.9234682490. The cubic root of 256413718 is about 635.3022868940.

The spelling of 256413718 in words is "two hundred fifty-six million, four hundred thirteen thousand, seven hundred eighteen".