22522540 has 24 divisors (see below), whose sum is σ = 48399120. Its totient is φ = 8799168.

The previous prime is 22522517. The next prime is 22522553. The reversal of 22522540 is 4522522.

It is a happy number.

It is a plaindrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12235 + ... + 13954.

It is an arithmetic number, because the mean of its divisors is an integer number (2016630).

Almost surely, 2^22522540 is an apocalyptic number.

22522540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22522540 is an abundant number, since it is smaller than the sum of its proper divisors (25876580).

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

22522540 is a wasteful number, since it uses less digits than its factorization.

22522540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26241 (or 26239 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 22522540 is about 4745.7918201286. The cubic root of 22522540 is about 282.4050481005.

The spelling of 22522540 in words is "twenty-two million, five hundred twenty-two thousand, five hundred forty".