22523022 has 40 divisors (see below), whose sum is σ = 51714432. Its totient is φ = 7322400.

The previous prime is 22522991. The next prime is 22523023. The reversal of 22523022 is 22032522.

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

It is a junction number, because it is equal to n+sod(n) for n = 22522986 and 22523004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22523023) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4947 + ... + 8337.

Almost surely, 2^22523022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22523022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25857216).

22523022 is an abundant number, since it is smaller than the sum of its proper divisors (29191410).

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

22523022 is a wasteful number, since it uses less digits than its factorization.

22523022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446 (or 3437 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22523022 is about 4745.8426016883. The cubic root of 22523022 is about 282.4070626492.

Adding to 22523022 its reverse (22032522), we get a palindrome (44555544).

The spelling of 22523022 in words is "twenty-two million, five hundred twenty-three thousand, twenty-two".