22572205236 has 144 divisors (see below), whose sum is σ = 65734789120. Its totient is φ = 6397392960.

The previous prime is 22572205177. The next prime is 22572205307. The reversal of 22572205236 is 63250227522.

22572205236 is a `hidden beast` number, since 2 + 2 + 572 + 2 + 0 + 52 + 36 = 666.

It is a super-2 number, since 2×22572205236² (a number of 22 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22572205236.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 23342025 + ... + 23342991.

Almost surely, 2^22572205236 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 22572205236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32867394560).

22572205236 is an abundant number, since it is smaller than the sum of its proper divisors (43162583884).

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

22572205236 is a wasteful number, since it uses less digits than its factorization.

22572205236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634 (or 1629 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The spelling of 22572205236 in words is "twenty-two billion, five hundred seventy-two million, two hundred five thousand, two hundred thirty-six".