22428290 has 16 divisors (see below), whose sum is σ = 41462712. Its totient is φ = 8728704.

The previous prime is 22428277. The next prime is 22428349. The reversal of 22428290 is 9282422.

It can be written as a sum of positive squares in 4 ways, for example, as 17397241 + 5031049 = 4171^2 + 2243^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29939 + ... + 30678.

Almost surely, 2^22428290 is an apocalyptic number.

22428290 is a deficient number, since it is larger than the sum of its proper divisors (19034422).

22428290 is a wasteful number, since it uses less digits than its factorization.

22428290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60661.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 22428290 is about 4735.8515601737. The cubic root of 22428290 is about 282.0105708359.

The spelling of 22428290 in words is "twenty-two million, four hundred twenty-eight thousand, two hundred ninety".