256132818 has 12 divisors (see below), whose sum is σ = 554954478. Its totient is φ = 85377600.

The previous prime is 256132813. The next prime is 256132823. The reversal of 256132818 is 818231652.

It is a happy number.

256132818 is a `hidden beast` number, since 2 + 5 + 613 + 28 + 18 = 666.

It is an interprime number because it is at equal distance from previous prime (256132813) and next prime (256132823).

It can be written as a sum of positive squares in only one way, i.e., 250810569 + 5322249 = 15837^2 + 2307^2 .

It is a super-2 number, since 2×256132818² = 131208040913242248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256132813) 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 5 ways as a sum of consecutive naturals, for example, 7114783 + ... + 7114818.

Almost surely, 2^256132818 is an apocalyptic number.

256132818 is an abundant number, since it is smaller than the sum of its proper divisors (298821660).

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

256132818 is a wasteful number, since it uses less digits than its factorization.

256132818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14229609 (or 14229606 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 256132818 is about 16004.1500242906. The cubic root of 256132818 is about 635.0702119235.

The spelling of 256132818 in words is "two hundred fifty-six million, one hundred thirty-two thousand, eight hundred eighteen".