22565390 has 8 divisors (see below), whose sum is σ = 40617720. Its totient is φ = 9026152.

The previous prime is 22565383. The next prime is 22565423. The reversal of 22565390 is 9356522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128260 + ... + 1128279.

It is an arithmetic number, because the mean of its divisors is an integer number (5077215).

Almost surely, 2^22565390 is an apocalyptic number.

22565390 is a deficient number, since it is larger than the sum of its proper divisors (18052330).

22565390 is a wasteful number, since it uses less digits than its factorization.

22565390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256546.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 22565390 is about 4750.3042007855. The cubic root of 22565390 is about 282.5840301361.

The spelling of 22565390 in words is "twenty-two million, five hundred sixty-five thousand, three hundred ninety".