22306490 has 16 divisors (see below), whose sum is σ = 40207752. Its totient is φ = 8910144.

The previous prime is 22306489. The next prime is 22306517. The reversal of 22306490 is 9460322.

It can be written as a sum of positive squares in 4 ways, for example, as 5257849 + 17048641 = 2293^2 + 4129^2 .

It is a super-2 number, since 2×22306490² = 995158992240200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10172 + ... + 12168.

Almost surely, 2^22306490 is an apocalyptic number.

22306490 is a deficient number, since it is larger than the sum of its proper divisors (17901262).

22306490 is a wasteful number, since it uses less digits than its factorization.

22306490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3121.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 22306490 is about 4722.9746982172. The cubic root of 22306490 is about 281.4991444984.

The spelling of 22306490 in words is "twenty-two million, three hundred six thousand, four hundred ninety".