256111872 has 36 divisors (see below), whose sum is σ = 681633120. Its totient is φ = 85370368.

The previous prime is 256111859. The next prime is 256111873. The reversal of 256111872 is 278111652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256111873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165972 + ... + 167507.

Almost surely, 2^256111872 is an apocalyptic number.

It is an amenable number.

256111872 is an abundant number, since it is smaller than the sum of its proper divisors (425521248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256111872 is an equidigital number, since it uses as much as digits as its factorization.

256111872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333498 (or 333484 counting only the distinct ones).

The product of its digits is 6720, while the sum is 33.

The square root of 256111872 is about 16003.4956181454. The cubic root of 256111872 is about 635.0528998854.

The spelling of 256111872 in words is "two hundred fifty-six million, one hundred eleven thousand, eight hundred seventy-two".