23022090 has 128 divisors (see below), whose sum is σ = 75640320. Its totient is φ = 4852224.

The previous prime is 23022079. The next prime is 23022137. The reversal of 23022090 is 9022032.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24102 + ... + 25038.

It is an arithmetic number, because the mean of its divisors is an integer number (590940).

Almost surely, 2^23022090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23022090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37820160).

23022090 is an abundant number, since it is smaller than the sum of its proper divisors (52618230).

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

23022090 is a wasteful number, since it uses less digits than its factorization.

23022090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 973 (or 967 counting only the distinct ones).

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

The square root of 23022090 is about 4798.1340123010. The cubic root of 23022090 is about 284.4777138119.

The spelling of 23022090 in words is "twenty-three million, twenty-two thousand, ninety".