23180022 has 24 divisors (see below), whose sum is σ = 50862240. Its totient is φ = 7628400.

The previous prime is 23180011. The next prime is 23180023. The reversal of 23180022 is 22008132.

It is a happy number.

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 = 23179977 and 23180004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23180023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6729 + ... + 9572.

It is an arithmetic number, because the mean of its divisors is an integer number (2119260).

Almost surely, 2^23180022 is an apocalyptic number.

23180022 is an abundant number, since it is smaller than the sum of its proper divisors (27682218).

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

23180022 is a wasteful number, since it uses less digits than its factorization.

23180022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16388 (or 16385 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 23180022 is about 4814.5635316195. The cubic root of 23180022 is about 285.1267395677.

Adding to 23180022 its reverse (22008132), we get a palindrome (45188154).

The spelling of 23180022 in words is "twenty-three million, one hundred eighty thousand, twenty-two".