22861972 has 12 divisors (see below), whose sum is σ = 45724000. Its totient is φ = 9797976.

The previous prime is 22861961. The next prime is 22861999. The reversal of 22861972 is 27916822.

22861972 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408222 + ... + 408277.

Almost surely, 2^22861972 is an apocalyptic number.

It is an amenable number.

22861972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22861972 is a wasteful number, since it uses less digits than its factorization.

22861972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816510 (or 816508 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 22861972 is about 4781.4194545135. The cubic root of 22861972 is about 283.8166673681.

The spelling of 22861972 in words is "twenty-two million, eight hundred sixty-one thousand, nine hundred seventy-two".