22642285 has 12 divisors (see below), whose sum is σ = 27646164. Its totient is φ = 17802240.

The previous prime is 22642273. The next prime is 22642313. The reversal of 22642285 is 58224622.

It can be written as a sum of positive squares in 6 ways, for example, as 10719076 + 11923209 = 3274^2 + 3453^2 .

It is not a de Polignac number, because 22642285 - 2²³ = 14253677 is a prime.

It is a Duffinian number.

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, 17997 + ... + 19213.

It is an arithmetic number, because the mean of its divisors is an integer number (2303847).

Almost surely, 2^22642285 is an apocalyptic number.

It is an amenable number.

22642285 is a deficient number, since it is larger than the sum of its proper divisors (5003879).

22642285 is an equidigital number, since it uses as much as digits as its factorization.

22642285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1283 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 22642285 is about 4758.3910095746. The cubic root of 22642285 is about 282.9046489193.

The spelling of 22642285 in words is "twenty-two million, six hundred forty-two thousand, two hundred eighty-five".