22997400 has 48 divisors (see below), whose sum is σ = 71293800. Its totient is φ = 6132480.

The previous prime is 22997393. The next prime is 22997417. The reversal of 22997400 is 479922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18565 + ... + 19764.

Almost surely, 2^22997400 is an apocalyptic number.

22997400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22997400 is an abundant number, since it is smaller than the sum of its proper divisors (48296400).

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

22997400 is a wasteful number, since it uses less digits than its factorization.

22997400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38348 (or 38339 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 22997400 is about 4795.5604469134. The cubic root of 22997400 is about 284.3759815608.

The spelling of 22997400 in words is "twenty-two million, nine hundred ninety-seven thousand, four hundred".