22621972 has 48 divisors (see below), whose sum is σ = 43747200. Its totient is φ = 10200960.

The previous prime is 22621961. The next prime is 22621979. The reversal of 22621972 is 27912622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22621979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162679 + ... + 162817.

It is an arithmetic number, because the mean of its divisors is an integer number (911400).

Almost surely, 2^22621972 is an apocalyptic number.

It is an amenable number.

22621972 is a deficient number, since it is larger than the sum of its proper divisors (21125228).

22621972 is a wasteful number, since it uses less digits than its factorization.

22621972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 254 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 22621972 is about 4756.2560906663. The cubic root of 22621972 is about 282.8200231630.

The spelling of 22621972 in words is "twenty-two million, six hundred twenty-one thousand, nine hundred seventy-two".