22388581272 has 32 divisors (see below), whose sum is σ = 55979827200. Its totient is φ = 7461743904.

The previous prime is 22388581249. The next prime is 22388581289. The reversal of 22388581272 is 27218588322.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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, 102673 + ... + 235199.

It is an arithmetic number, because the mean of its divisors is an integer number (1749369600).

Almost surely, 2^22388581272 is an apocalyptic number.

It is an amenable number.

22388581272 is an abundant number, since it is smaller than the sum of its proper divisors (33591245928).

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

22388581272 is a wasteful number, since it uses less digits than its factorization.

22388581272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139575 (or 139571 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The spelling of 22388581272 in words is "twenty-two billion, three hundred eighty-eight million, five hundred eighty-one thousand, two hundred seventy-two".