22534140 has 24 divisors (see below), whose sum is σ = 63095760. Its totient is φ = 6009088.

The previous prime is 22534139. The next prime is 22534153. The reversal of 22534140 is 4143522.

It is a congruent number.

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, 187725 + ... + 187844.

It is an arithmetic number, because the mean of its divisors is an integer number (2628990).

Almost surely, 2^22534140 is an apocalyptic number.

22534140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22534140 is an abundant number, since it is smaller than the sum of its proper divisors (40561620).

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

22534140 is a wasteful number, since it uses less digits than its factorization.

22534140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375581 (or 375579 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22534140 is about 4747.0137981683. The cubic root of 22534140 is about 282.4535230403.

Adding to 22534140 its reverse (4143522), we get a palindrome (26677662).

The spelling of 22534140 in words is "twenty-two million, five hundred thirty-four thousand, one hundred forty".