22265790 has 16 divisors (see below), whose sum is σ = 53437968. Its totient is φ = 5937536.

The previous prime is 22265779. The next prime is 22265791. The reversal of 22265790 is 9756222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22265791) 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, 371067 + ... + 371126.

It is an arithmetic number, because the mean of its divisors is an integer number (3339873).

Almost surely, 2^22265790 is an apocalyptic number.

22265790 is an abundant number, since it is smaller than the sum of its proper divisors (31172178).

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

22265790 is a wasteful number, since it uses less digits than its factorization.

22265790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742203.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 22265790 is about 4718.6640058389. The cubic root of 22265790 is about 281.3278342603.

The spelling of 22265790 in words is "twenty-two million, two hundred sixty-five thousand, seven hundred ninety".