22238997 has 16 divisors (see below), whose sum is σ = 33392640. Its totient is φ = 13042800.

The previous prime is 22238971. The next prime is 22239001. The reversal of 22238997 is 79983222.

22238997 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 22238997 - 2¹⁵ = 22206229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22238197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9847 + ... + 11892.

It is an arithmetic number, because the mean of its divisors is an integer number (2087040).

Almost surely, 2^22238997 is an apocalyptic number.

It is an amenable number.

22238997 is a deficient number, since it is larger than the sum of its proper divisors (11153643).

22238997 is a wasteful number, since it uses less digits than its factorization.

22238997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21784.

The product of its digits is 108864, while the sum is 42.

The square root of 22238997 is about 4715.8241061346. The cubic root of 22238997 is about 281.2149459522.

The spelling of 22238997 in words is "twenty-two million, two hundred thirty-eight thousand, nine hundred ninety-seven".