22175990 has 16 divisors (see below), whose sum is σ = 42265152. Its totient is φ = 8348544.

The previous prime is 22175977. The next prime is 22175999. The reversal of 22175990 is 9957122.

It is a self number, because there is not a number n which added to its sum of digits gives 22175990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22175999) 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, 65054 + ... + 65393.

It is an arithmetic number, because the mean of its divisors is an integer number (2641572).

Almost surely, 2^22175990 is an apocalyptic number.

22175990 is a deficient number, since it is larger than the sum of its proper divisors (20089162).

22175990 is a wasteful number, since it uses less digits than its factorization.

22175990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130471.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 22175990 is about 4709.1389871186. The cubic root of 22175990 is about 280.9491175711.

The spelling of 22175990 in words is "twenty-two million, one hundred seventy-five thousand, nine hundred ninety".