256703812 has 6 divisors (see below), whose sum is σ = 449231678. Its totient is φ = 128351904.

The previous prime is 256703771. The next prime is 256703827. The reversal of 256703812 is 218307652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 212401476 + 44302336 = 14574^2 + 6656^2 .

It is an alternating number because its digits alternate between even and odd.

It is a pancake number, because a pancake can be divided into 256703812 parts by 22658 straight cuts.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32087973 + ... + 32087980.

Almost surely, 2^256703812 is an apocalyptic number.

It is an amenable number.

256703812 is a deficient number, since it is larger than the sum of its proper divisors (192527866).

256703812 is a wasteful number, since it uses less digits than its factorization.

256703812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64175957 (or 64175955 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 256703812 is about 16021.9790288216. The cubic root of 256703812 is about 635.5417799614.

The spelling of 256703812 in words is "two hundred fifty-six million, seven hundred three thousand, eight hundred twelve".