22208972 has 12 divisors (see below), whose sum is σ = 38898720. Its totient is φ = 11095056.

The previous prime is 22208969. The next prime is 22208981. The reversal of 22208972 is 27980222.

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, 7853 + ... + 10299.

It is an arithmetic number, because the mean of its divisors is an integer number (3241560).

Almost surely, 2^22208972 is an apocalyptic number.

It is an amenable number.

22208972 is a deficient number, since it is larger than the sum of its proper divisors (16689748).

22208972 is a wasteful number, since it uses less digits than its factorization.

22208972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720 (or 4718 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 22208972 is about 4712.6396000543. The cubic root of 22208972 is about 281.0883323063.

The spelling of 22208972 in words is "twenty-two million, two hundred eight thousand, nine hundred seventy-two".