22500918 has 36 divisors (see below), whose sum is σ = 53592084. Its totient is φ = 6817800.

The previous prime is 22500917. The next prime is 22500931. The reversal of 22500918 is 81900522.

It is a junction number, because it is equal to n+sod(n) for n = 22500891 and 22500900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22500913) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2988 + ... + 7343.

It is an arithmetic number, because the mean of its divisors is an integer number (1488669).

Almost surely, 2^22500918 is an apocalyptic number.

22500918 is an abundant number, since it is smaller than the sum of its proper divisors (31091166).

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

22500918 is a wasteful number, since it uses less digits than its factorization.

22500918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10361 (or 10347 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 22500918 is about 4743.5132549620. The cubic root of 22500918 is about 282.3146480391.

The spelling of 22500918 in words is "twenty-two million, five hundred thousand, nine hundred eighteen".