22285690 has 24 divisors (see below), whose sum is σ = 46664532. Its totient is φ = 7640640.

The previous prime is 22285619. The next prime is 22285699. The reversal of 22285690 is 9658222.

It can be written as a sum of positive squares in 2 ways, for example, as 18896409 + 3389281 = 4347^2 + 1841^2 .

It is a super-2 number, since 2×22285690² = 993303957552200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22285699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22251 + ... + 23230.

Almost surely, 2^22285690 is an apocalyptic number.

22285690 is an abundant number, since it is smaller than the sum of its proper divisors (24378842).

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

22285690 is a wasteful number, since it uses less digits than its factorization.

22285690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45502 (or 45495 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 22285690 is about 4720.7721825989. The cubic root of 22285690 is about 281.4116213446.

The spelling of 22285690 in words is "twenty-two million, two hundred eighty-five thousand, six hundred ninety".