56223636 has 24 divisors (see below), whose sum is σ = 149929920. Its totient is φ = 16063872.

The previous prime is 56223623. The next prime is 56223647. The reversal of 56223636 is 63632265.

It is a super-2 number, since 2×56223636² = 6322194490120992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56223597 and 56223606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334581 + ... + 334748.

It is an arithmetic number, because the mean of its divisors is an integer number (6247080).

Almost surely, 2^56223636 is an apocalyptic number.

It is an amenable number.

56223636 is an abundant number, since it is smaller than the sum of its proper divisors (93706284).

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

56223636 is a wasteful number, since it uses less digits than its factorization.

56223636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669343 (or 669341 counting only the distinct ones).

The product of its digits is 38880, while the sum is 33.

The square root of 56223636 is about 7498.2421940079. The cubic root of 56223636 is about 383.0948461552.

The spelling of 56223636 in words is "fifty-six million, two hundred twenty-three thousand, six hundred thirty-six".