22165488 has 60 divisors (see below), whose sum is σ = 64341368. Its totient is φ = 7387200.

The previous prime is 22165487. The next prime is 22165513. The reversal of 22165488 is 88456122.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22165487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1038 + ... + 6738.

Almost surely, 2^22165488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22165488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32170684).

22165488 is an abundant number, since it is smaller than the sum of its proper divisors (42175880).

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

22165488 is an equidigital number, since it uses as much as digits as its factorization.

22165488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5724 (or 5706 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 22165488 is about 4708.0237892347. The cubic root of 22165488 is about 280.9047603853.

The spelling of 22165488 in words is "twenty-two million, one hundred sixty-five thousand, four hundred eighty-eight".