22365990 has 32 divisors (see below), whose sum is σ = 59643360. Its totient is φ = 5964192.

The previous prime is 22365979. The next prime is 22365991. The reversal of 22365990 is 9956322.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22365991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41149 + ... + 41688.

It is an arithmetic number, because the mean of its divisors is an integer number (1863855).

Almost surely, 2^22365990 is an apocalyptic number.

22365990 is an abundant number, since it is smaller than the sum of its proper divisors (37277370).

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

22365990 is a wasteful number, since it uses less digits than its factorization.

22365990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82853 (or 82847 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 22365990 is about 4729.2694996162. The cubic root of 22365990 is about 281.7492111672.

The spelling of 22365990 in words is "twenty-two million, three hundred sixty-five thousand, nine hundred ninety".