22008990 has 32 divisors (see below), whose sum is σ = 52992000. Its totient is φ = 5850144.

The previous prime is 22008979. The next prime is 22009003. The reversal of 22008990 is 9980022.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 10011 + ... + 12009.

It is an arithmetic number, because the mean of its divisors is an integer number (1656000).

Almost surely, 2^22008990 is an apocalyptic number.

22008990 is an abundant number, since it is smaller than the sum of its proper divisors (30983010).

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

22008990 is a wasteful number, since it uses less digits than its factorization.

22008990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 22008990 is about 4691.3739991606. The cubic root of 22008990 is about 280.2420950400.

The spelling of 22008990 in words is "twenty-two million, eight thousand, nine hundred ninety".