56610240 has 112 divisors (see below), whose sum is σ = 181721760. Its totient is φ = 14929920.

The previous prime is 56610227. The next prime is 56610241. The reversal of 56610240 is 4201665.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 56610240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56610241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104370 + ... + 104910.

Almost surely, 2^56610240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56610240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90860880).

56610240 is an abundant number, since it is smaller than the sum of its proper divisors (125111520).

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

56610240 is a wasteful number, since it uses less digits than its factorization.

56610240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 56610240 is about 7523.9776714182. The cubic root of 56610240 is about 383.9709179364.

The spelling of 56610240 in words is "fifty-six million, six hundred ten thousand, two hundred forty".