256616426 has 8 divisors (see below), whose sum is σ = 419917824. Its totient is φ = 116643820.

The previous prime is 256616351. The next prime is 256616441. The reversal of 256616426 is 624616652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 256616426.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5832170 + ... + 5832213.

It is an arithmetic number, because the mean of its divisors is an integer number (52489728).

Almost surely, 2^256616426 is an apocalyptic number.

256616426 is a deficient number, since it is larger than the sum of its proper divisors (163301398).

256616426 is a wasteful number, since it uses less digits than its factorization.

256616426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11664396.

The product of its digits is 103680, while the sum is 38.

The square root of 256616426 is about 16019.2517303400. The cubic root of 256616426 is about 635.4696556499.

The spelling of 256616426 in words is "two hundred fifty-six million, six hundred sixteen thousand, four hundred twenty-six".