22613990 has 64 divisors (see below), whose sum is σ = 50112000. Its totient is φ = 7324128.

The previous prime is 22613989. The next prime is 22614017. The reversal of 22613990 is 9931622.

It is a super-2 number, since 2×22613990² = 1022785087440200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64997 + ... + 65343.

It is an arithmetic number, because the mean of its divisors is an integer number (783000).

Almost surely, 2^22613990 is an apocalyptic number.

22613990 is an abundant number, since it is smaller than the sum of its proper divisors (27498010).

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

22613990 is a wasteful number, since it uses less digits than its factorization.

22613990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 22613990 is about 4755.4169112708. The cubic root of 22613990 is about 282.7867555801.

The spelling of 22613990 in words is "twenty-two million, six hundred thirteen thousand, nine hundred ninety".