22023090 has 128 divisors (see below), whose sum is σ = 63763200. Its totient is φ = 5458752.

The previous prime is 22023083. The next prime is 22023091. The reversal of 22023090 is 9032022.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22023091) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 415504 + ... + 415556.

It is an arithmetic number, because the mean of its divisors is an integer number (498150).

Almost surely, 2^22023090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22023090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31881600).

22023090 is an abundant number, since it is smaller than the sum of its proper divisors (41740110).

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

22023090 is an equidigital number, since it uses as much as digits as its factorization.

22023090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 22023090 is about 4692.8765165941. The cubic root of 22023090 is about 280.3019277117.

The spelling of 22023090 in words is "twenty-two million, twenty-three thousand, ninety".