22409660 has 72 divisors (see below), whose sum is σ = 58988160. Its totient is φ = 7088256.

The previous prime is 22409627. The next prime is 22409669. The reversal of 22409660 is 6690422.

It is a super-2 number, since 2×22409660² = 1004385722631200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22409669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11861 + ... + 13619.

It is an arithmetic number, because the mean of its divisors is an integer number (819280).

Almost surely, 2^22409660 is an apocalyptic number.

22409660 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 22409660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29494080).

22409660 is an abundant number, since it is smaller than the sum of its proper divisors (36578500).

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

22409660 is a wasteful number, since it uses less digits than its factorization.

22409660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795 (or 1786 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 22409660 is about 4733.8842402408. The cubic root of 22409660 is about 281.9324654267.

The spelling of 22409660 in words is "twenty-two million, four hundred nine thousand, six hundred sixty".