56220072 has 32 divisors (see below), whose sum is σ = 142534080. Its totient is φ = 18475520.

The previous prime is 56220053. The next prime is 56220077. The reversal of 56220072 is 27002265.

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

It is not an unprimeable number, because it can be changed into a prime (56220077) 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, 14793 + ... + 18200.

It is an arithmetic number, because the mean of its divisors is an integer number (4454190).

Almost surely, 2^56220072 is an apocalyptic number.

It is an amenable number.

56220072 is an abundant number, since it is smaller than the sum of its proper divisors (86314008).

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

56220072 is a wasteful number, since it uses less digits than its factorization.

56220072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33073 (or 33069 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 56220072 is about 7498.0045345412. The cubic root of 56220072 is about 383.0867512270.

The spelling of 56220072 in words is "fifty-six million, two hundred twenty thousand, seventy-two".