22997889 has 24 divisors (see below), whose sum is σ = 35616672. Its totient is φ = 14248320.

The previous prime is 22997857. The next prime is 22997903. The reversal of 22997889 is 98879922.

It is not a de Polignac number, because 22997889 - 2⁵ = 22997857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22997789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11794 + ... + 13604.

It is an arithmetic number, because the mean of its divisors is an integer number (1484028).

Almost surely, 2^22997889 is an apocalyptic number.

It is an amenable number.

22997889 is a deficient number, since it is larger than the sum of its proper divisors (12618783).

22997889 is a wasteful number, since it uses less digits than its factorization.

22997889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1914 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 22997889 is about 4795.6114312984. The cubic root of 22997889 is about 284.3779971346.

The spelling of 22997889 in words is "twenty-two million, nine hundred ninety-seven thousand, eight hundred eighty-nine".