256703156 has 12 divisors (see below), whose sum is σ = 449406720. Its totient is φ = 128301240.

The previous prime is 256703149. The next prime is 256703257. The reversal of 256703156 is 651307652.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371 + ... + 22661.

It is an arithmetic number, because the mean of its divisors is an integer number (37450560).

Almost surely, 2^256703156 is an apocalyptic number.

It is an amenable number.

256703156 is a deficient number, since it is larger than the sum of its proper divisors (192703564).

256703156 is a wasteful number, since it uses less digits than its factorization.

256703156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25174 (or 25172 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 256703156 is about 16021.9585569305. The cubic root of 256703156 is about 635.5412385907.

The spelling of 256703156 in words is "two hundred fifty-six million, seven hundred three thousand, one hundred fifty-six".