22732164 has 144 divisors (see below), whose sum is σ = 73627008. Its totient is φ = 5971968.

The previous prime is 22732153. The next prime is 22732219. The reversal of 22732164 is 46123722.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 88324 + ... + 88580.

Almost surely, 2^22732164 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 22732164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36813504).

22732164 is an abundant number, since it is smaller than the sum of its proper divisors (50894844).

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

22732164 is a wasteful number, since it uses less digits than its factorization.

22732164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 282 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 22732164 is about 4767.8259196409. The cubic root of 22732164 is about 283.2784865770.

Adding to 22732164 its reverse (46123722), we get a palindrome (68855886).

The spelling of 22732164 in words is "twenty-two million, seven hundred thirty-two thousand, one hundred sixty-four".