22997500 has 30 divisors (see below), whose sum is σ = 50296400. Its totient is φ = 9198000.

The previous prime is 22997497. The next prime is 22997501. The reversal of 22997500 is 579922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22997501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2100 + ... + 7099.

Almost surely, 2^22997500 is an apocalyptic number.

22997500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22997500 is an abundant number, since it is smaller than the sum of its proper divisors (27298900).

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

22997500 is an equidigital number, since it uses as much as digits as its factorization.

22997500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9223 (or 9206 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 22997500 is about 4795.5708732121. The cubic root of 22997500 is about 284.3763937459.

The spelling of 22997500 in words is "twenty-two million, nine hundred ninety-seven thousand, five hundred".