22704990 has 64 divisors (see below), whose sum is σ = 67944960. Its totient is φ = 4717440.

The previous prime is 22704967. The next prime is 22705009. The reversal of 22704990 is 9940722.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 2605 + ... + 7224.

It is an arithmetic number, because the mean of its divisors is an integer number (1061640).

Almost surely, 2^22704990 is an apocalyptic number.

22704990 is an abundant number, since it is smaller than the sum of its proper divisors (45239970).

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

22704990 is a wasteful number, since it uses less digits than its factorization.

22704990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9857.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 22704990 is about 4764.9753409645. The cubic root of 22704990 is about 283.1655646550.

It can be divided in two parts, 2270 and 4990, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 22704990 in words is "twenty-two million, seven hundred four thousand, nine hundred ninety".