22045290 has 32 divisors (see below), whose sum is σ = 54202176. Its totient is φ = 5735040.

The previous prime is 22045279. The next prime is 22045333. The reversal of 22045290 is 9254022.

It is a super-2 number, since 2×22045290² = 971989622368200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22045290.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7732 + ... + 10191.

It is an arithmetic number, because the mean of its divisors is an integer number (1693818).

Almost surely, 2^22045290 is an apocalyptic number.

22045290 is an abundant number, since it is smaller than the sum of its proper divisors (32156886).

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

22045290 is a wasteful number, since it uses less digits than its factorization.

22045290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17974.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 22045290 is about 4695.2412078614. The cubic root of 22045290 is about 280.3960806071.

The spelling of 22045290 in words is "twenty-two million, forty-five thousand, two hundred ninety".