22187974272 has 64 divisors (see below), whose sum is σ = 60048876960. Its totient is φ = 7256437760.

The previous prime is 22187974241. The next prime is 22187974279. The reversal of 22187974272 is 27247978122.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (22187974279) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 524754 + ... + 565457.

Almost surely, 2^22187974272 is an apocalyptic number.

It is an amenable number.

22187974272 is an abundant number, since it is smaller than the sum of its proper divisors (37860902688).

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

22187974272 is a wasteful number, since it uses less digits than its factorization.

22187974272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090281 (or 1090269 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 51.

The spelling of 22187974272 in words is "twenty-two billion, one hundred eighty-seven million, nine hundred seventy-four thousand, two hundred seventy-two".