56443644 has 36 divisors (see below), whose sum is σ = 142946440. Its totient is φ = 18779040.

The previous prime is 56443643. The next prime is 56443669. The reversal of 56443644 is 44634465.

56443644 is a `hidden beast` number, since 5 + 6 + 4 + 4 + 3 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56443599 and 56443608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56443643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23742 + ... + 26010.

Almost surely, 2^56443644 is an apocalyptic number.

It is an amenable number.

56443644 is an abundant number, since it is smaller than the sum of its proper divisors (86502796).

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

56443644 is a wasteful number, since it uses less digits than its factorization.

56443644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970 (or 2965 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 56443644 is about 7512.8985085651. The cubic root of 56443644 is about 383.5938903205.

The spelling of 56443644 in words is "fifty-six million, four hundred forty-three thousand, six hundred forty-four".