22775990 has 32 divisors (see below), whose sum is σ = 41977440. Its totient is φ = 8895744.

The previous prime is 22775989. The next prime is 22775993. The reversal of 22775990 is 9957722.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22775993) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 139649 + ... + 139811.

It is an arithmetic number, because the mean of its divisors is an integer number (1311795).

Almost surely, 2^22775990 is an apocalyptic number.

22775990 is a deficient number, since it is larger than the sum of its proper divisors (19201450).

22775990 is a wasteful number, since it uses less digits than its factorization.

22775990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416.

The product of its (nonzero) digits is 79380, while the sum is 41.

The square root of 22775990 is about 4772.4197216926. The cubic root of 22775990 is about 283.4604166549.

The spelling of 22775990 in words is "twenty-two million, seven hundred seventy-five thousand, nine hundred ninety".