56642404 has 48 divisors (see below), whose sum is σ = 124047616. Its totient is φ = 22032000.

The previous prime is 56642393. The next prime is 56642429. The reversal of 56642404 is 40424665.

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 15 ways as a sum of consecutive naturals, for example, 20929 + ... + 23479.

Almost surely, 2^56642404 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 56642404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62023808).

56642404 is an abundant number, since it is smaller than the sum of its proper divisors (67405212).

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

56642404 is a wasteful number, since it uses less digits than its factorization.

56642404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2636 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 56642404 is about 7526.1148011441. The cubic root of 56642404 is about 384.0436238779.

The spelling of 56642404 in words is "fifty-six million, six hundred forty-two thousand, four hundred four".