256263986 has 8 divisors (see below), whose sum is σ = 419341104. Its totient is φ = 116483620.

The previous prime is 256263979. The next prime is 256263991. The reversal of 256263986 is 689362652.

256263986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 256263986.

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, 5824160 + ... + 5824203.

It is an arithmetic number, because the mean of its divisors is an integer number (52417638).

Almost surely, 2^256263986 is an apocalyptic number.

256263986 is a deficient number, since it is larger than the sum of its proper divisors (163077118).

256263986 is a wasteful number, since it uses less digits than its factorization.

256263986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11648376.

The product of its digits is 933120, while the sum is 47.

The square root of 256263986 is about 16008.2474368683. The cubic root of 256263986 is about 635.1786018785.

The spelling of 256263986 in words is "two hundred fifty-six million, two hundred sixty-three thousand, nine hundred eighty-six".