22997072 has 30 divisors (see below), whose sum is σ = 51833178. Its totient is φ = 9855552.

The previous prime is 22997057. The next prime is 22997077. The reversal of 22997072 is 27079922.

It can be written as a sum of positive squares in only one way, i.e., 21864976 + 1132096 = 4676^2 + 1064^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22997077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13883 + ... + 15450.

Almost surely, 2^22997072 is an apocalyptic number.

It is an amenable number.

22997072 is an abundant number, since it is smaller than the sum of its proper divisors (28836106).

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

22997072 is a wasteful number, since it uses less digits than its factorization.

22997072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29355 (or 29342 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 22997072 is about 4795.5262484945. The cubic root of 22997072 is about 284.3746295853.

The spelling of 22997072 in words is "twenty-two million, nine hundred ninety-seven thousand, seventy-two".