256371632 has 20 divisors (see below), whose sum is σ = 541876776. Its totient is φ = 116532480.

The previous prime is 256371623. The next prime is 256371637. The reversal of 256371632 is 236173652.

It is a junction number, because it is equal to n+sod(n) for n = 256371592 and 256371601.

It is not an unprimeable number, because it can be changed into a prime (256371637) by changing a digit.

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, 728153 + ... + 728504.

Almost surely, 2^256371632 is an apocalyptic number.

256371632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256371632 is an abundant number, since it is smaller than the sum of its proper divisors (285505144).

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

256371632 is a wasteful number, since it uses less digits than its factorization.

256371632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1456676 (or 1456670 counting only the distinct ones).

The product of its digits is 45360, while the sum is 35.

The square root of 256371632 is about 16011.6092882633. The cubic root of 256371632 is about 635.2675269298.

The spelling of 256371632 in words is "two hundred fifty-six million, three hundred seventy-one thousand, six hundred thirty-two".