22508890 has 16 divisors (see below), whose sum is σ = 40723200. Its totient is φ = 8957520.

The previous prime is 22508887. The next prime is 22508897. The reversal of 22508890 is 9880522.

It is not an unprimeable number, because it can be changed into a prime (22508897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3666 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (2545200).

Almost surely, 2^22508890 is an apocalyptic number.

22508890 is a deficient number, since it is larger than the sum of its proper divisors (18214310).

22508890 is a wasteful number, since it uses less digits than its factorization.

22508890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11517.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 22508890 is about 4744.3534859873. The cubic root of 22508890 is about 282.3479851476.

The spelling of 22508890 in words is "twenty-two million, five hundred eight thousand, eight hundred ninety".