22758990 has 16 divisors (see below), whose sum is σ = 54621648. Its totient is φ = 6069056.

The previous prime is 22758973. The next prime is 22759001. The reversal of 22758990 is 9985722.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379287 + ... + 379346.

It is an arithmetic number, because the mean of its divisors is an integer number (3413853).

Almost surely, 2^22758990 is an apocalyptic number.

22758990 is an abundant number, since it is smaller than the sum of its proper divisors (31862658).

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

22758990 is a wasteful number, since it uses less digits than its factorization.

22758990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758643.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 22758990 is about 4770.6383220697. The cubic root of 22758990 is about 283.3898741449.

The spelling of 22758990 in words is "twenty-two million, seven hundred fifty-eight thousand, nine hundred ninety".