22920388 has 6 divisors (see below), whose sum is σ = 40110686. Its totient is φ = 11460192.

The previous prime is 22920383. The next prime is 22920409. The reversal of 22920388 is 88302922.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21362884 + 1557504 = 4622^2 + 1248^2 .

It is not an unprimeable number, because it can be changed into a prime (22920383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2865045 + ... + 2865052.

Almost surely, 2^22920388 is an apocalyptic number.

It is an amenable number.

22920388 is a deficient number, since it is larger than the sum of its proper divisors (17190298).

22920388 is a wasteful number, since it uses less digits than its factorization.

22920388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730101 (or 5730099 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 22920388 is about 4787.5242035942. The cubic root of 22920388 is about 284.0581941185.

The spelling of 22920388 in words is "twenty-two million, nine hundred twenty thousand, three hundred eighty-eight".