56636140 has 24 divisors (see below), whose sum is σ = 129748752. Its totient is φ = 20594880.

The previous prime is 56636123. The next prime is 56636141. The reversal of 56636140 is 4163665.

It is not an unprimeable number, because it can be changed into a prime (56636141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128499 + ... + 128938.

It is an arithmetic number, because the mean of its divisors is an integer number (5406198).

Almost surely, 2^56636140 is an apocalyptic number.

It is an amenable number.

56636140 is an abundant number, since it is smaller than the sum of its proper divisors (73112612).

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

56636140 is a wasteful number, since it uses less digits than its factorization.

56636140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257457 (or 257455 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 56636140 is about 7525.6986386647. The cubic root of 56636140 is about 384.0294664165.

The spelling of 56636140 in words is "fifty-six million, six hundred thirty-six thousand, one hundred forty".