22504990 has 16 divisors (see below), whose sum is σ = 40807152. Its totient is φ = 8935744.

The previous prime is 22504981. The next prime is 22505003. The reversal of 22504990 is 9940522.

It is a congruent number.

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, 6844 + ... + 9583.

It is an arithmetic number, because the mean of its divisors is an integer number (2550447).

Almost surely, 2^22504990 is an apocalyptic number.

22504990 is a deficient number, since it is larger than the sum of its proper divisors (18302162).

22504990 is a wasteful number, since it uses less digits than its factorization.

22504990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16571.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 22504990 is about 4743.9424532766. The cubic root of 22504990 is about 282.3316772096.

The spelling of 22504990 in words is "twenty-two million, five hundred four thousand, nine hundred ninety".