256326279 has 12 divisors (see below), whose sum is σ = 375663288. Its totient is φ = 155349040.

The previous prime is 256326277. The next prime is 256326281. The reversal of 256326279 is 972623652.

It is an interprime number because it is at equal distance from previous prime (256326277) and next prime (256326281).

It is not a de Polignac number, because 256326279 - 2¹ = 256326277 is a prime.

It is a super-2 number, since 2×256326279² = 131406322611971682, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256326279.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256326277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352704 + ... + 353429.

It is an arithmetic number, because the mean of its divisors is an integer number (31305274).

Almost surely, 2^256326279 is an apocalyptic number.

256326279 is a deficient number, since it is larger than the sum of its proper divisors (119337009).

256326279 is a wasteful number, since it uses less digits than its factorization.

256326279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706158 (or 706147 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 256326279 is about 16010.1929719788. The cubic root of 256326279 is about 635.2300644031.

The spelling of 256326279 in words is "two hundred fifty-six million, three hundred twenty-six thousand, two hundred seventy-nine".