22638833 has 12 divisors (see below), whose sum is σ = 26699940. Its totient is φ = 19135872.

The previous prime is 22638827. The next prime is 22638853. The reversal of 22638833 is 33883622.

It can be written as a sum of positive squares in 2 ways, for example, as 15147664 + 7491169 = 3892^2 + 2737^2 .

It is not a de Polignac number, because 22638833 - 2¹⁸ = 22376689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22638793 and 22638802.

It is not an unprimeable number, because it can be changed into a prime (22638853) 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 11 ways as a sum of consecutive naturals, for example, 413 + ... + 6741.

It is an arithmetic number, because the mean of its divisors is an integer number (2224995).

Almost surely, 2^22638833 is an apocalyptic number.

It is an amenable number.

22638833 is a deficient number, since it is larger than the sum of its proper divisors (4061107).

22638833 is an equidigital number, since it uses as much as digits as its factorization.

22638833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416 (or 6409 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 22638833 is about 4758.0282680959. The cubic root of 22638833 is about 282.8902711525.

The spelling of 22638833 in words is "twenty-two million, six hundred thirty-eight thousand, eight hundred thirty-three".