256136232 has 32 divisors (see below), whose sum is σ = 698554080. Its totient is φ = 77616960.

The previous prime is 256136219. The next prime is 256136261. The reversal of 256136232 is 232631652.

It is a self number, because there is not a number n which added to its sum of digits gives 256136232.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484843 + ... + 485370.

It is an arithmetic number, because the mean of its divisors is an integer number (21829815).

Almost surely, 2^256136232 is an apocalyptic number.

256136232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

256136232 is an abundant number, since it is smaller than the sum of its proper divisors (442417848).

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

256136232 is a wasteful number, since it uses less digits than its factorization.

256136232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970233 (or 970229 counting only the distinct ones).

The product of its digits is 12960, while the sum is 30.

The square root of 256136232 is about 16004.2566837701. The cubic root of 256136232 is about 635.0730335326.

Adding to 256136232 its reverse (232631652), we get a palindrome (488767884).

The spelling of 256136232 in words is "two hundred fifty-six million, one hundred thirty-six thousand, two hundred thirty-two".