56622440 has 64 divisors (see below), whose sum is σ = 148608000. Its totient is φ = 19408704.

The previous prime is 56622439. The next prime is 56622473. The reversal of 56622440 is 4422665.

It is a super-2 number, since 2×56622440² = 6412201423107200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11657 + ... + 15783.

It is an arithmetic number, because the mean of its divisors is an integer number (2322000).

Almost surely, 2^56622440 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 56622440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74304000).

56622440 is an abundant number, since it is smaller than the sum of its proper divisors (91985560).

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

56622440 is a wasteful number, since it uses less digits than its factorization.

56622440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159 (or 4141 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 56622440 is about 7524.7883691171. The cubic root of 56622440 is about 383.9984989814.

The spelling of 56622440 in words is "fifty-six million, six hundred twenty-two thousand, four hundred forty".