22699972 has 6 divisors (see below), whose sum is σ = 39724958. Its totient is φ = 11349984.

The previous prime is 22699961. The next prime is 22699973. The reversal of 22699972 is 27999622.

It can be written as a sum of positive squares in only one way, i.e., 22146436 + 553536 = 4706^2 + 744^2 .

It is not an unprimeable number, because it can be changed into a prime (22699973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2837493 + ... + 2837500.

Almost surely, 2^22699972 is an apocalyptic number.

It is an amenable number.

22699972 is a deficient number, since it is larger than the sum of its proper divisors (17024986).

22699972 is a wasteful number, since it uses less digits than its factorization.

22699972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5674997 (or 5674995 counting only the distinct ones).

The product of its digits is 244944, while the sum is 46.

The square root of 22699972 is about 4764.4487613994. The cubic root of 22699972 is about 283.1447024349.

The spelling of 22699972 in words is "twenty-two million, six hundred ninety-nine thousand, nine hundred seventy-two".