22452290 has 24 divisors (see below), whose sum is σ = 47013372. Its totient is φ = 7697760.

The previous prime is 22452289. The next prime is 22452361. The reversal of 22452290 is 9225422.

It can be written as a sum of positive squares in 2 ways, for example, as 20511841 + 1940449 = 4529^2 + 1393^2 .

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, 22421 + ... + 23400.

Almost surely, 2^22452290 is an apocalyptic number.

22452290 is an abundant number, since it is smaller than the sum of its proper divisors (24561082).

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

22452290 is a wasteful number, since it uses less digits than its factorization.

22452290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45842 (or 45835 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 22452290 is about 4738.3847458812. The cubic root of 22452290 is about 282.1111259971. Note that the first 4 decimals are identical.

The spelling of 22452290 in words is "twenty-two million, four hundred fifty-two thousand, two hundred ninety".