22512660 has 48 divisors (see below), whose sum is σ = 64079232. Its totient is φ = 5904000.

The previous prime is 22512643. The next prime is 22512661. The reversal of 22512660 is 6621522.

It is a self number, because there is not a number n which added to its sum of digits gives 22512660.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22512661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 585 + ... + 6735.

It is an arithmetic number, because the mean of its divisors is an integer number (1334984).

Almost surely, 2^22512660 is an apocalyptic number.

22512660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22512660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32039616).

22512660 is an abundant number, since it is smaller than the sum of its proper divisors (41566572).

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

22512660 is a wasteful number, since it uses less digits than its factorization.

22512660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224 (or 6222 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 22512660 is about 4744.7507837609. The cubic root of 22512660 is about 282.3637476971.

The spelling of 22512660 in words is "twenty-two million, five hundred twelve thousand, six hundred sixty".