22515260 has 12 divisors (see below), whose sum is σ = 47282088. Its totient is φ = 9006096.

The previous prime is 22515257. The next prime is 22515289. The reversal of 22515260 is 6251522.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562862 + ... + 562901.

It is an arithmetic number, because the mean of its divisors is an integer number (3940174).

Almost surely, 2^22515260 is an apocalyptic number.

22515260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22515260 is an abundant number, since it is smaller than the sum of its proper divisors (24766828).

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

22515260 is a wasteful number, since it uses less digits than its factorization.

22515260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125772 (or 1125770 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 22515260 is about 4745.0247628437. The cubic root of 22515260 is about 282.3746173957.

Adding to 22515260 its reverse (6251522), we get a palindrome (28766782).

The spelling of 22515260 in words is "twenty-two million, five hundred fifteen thousand, two hundred sixty".