22790990 has 16 divisors (see below), whose sum is σ = 41081040. Its totient is φ = 9103680.

The previous prime is 22790981. The next prime is 22790993. The reversal of 22790990 is 9909722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22790993) 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, 9866 + ... + 11954.

It is an arithmetic number, because the mean of its divisors is an integer number (2567565).

Almost surely, 2^22790990 is an apocalyptic number.

22790990 is a deficient number, since it is larger than the sum of its proper divisors (18290050).

22790990 is a wasteful number, since it uses less digits than its factorization.

22790990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3187.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 22790990 is about 4773.9909928696. The cubic root of 22790990 is about 283.5226309014.

The spelling of 22790990 in words is "twenty-two million, seven hundred ninety thousand, nine hundred ninety".