22173264 has 70 divisors (see below), whose sum is σ = 64445466. Its totient is φ = 7387200.

The previous prime is 22173259. The next prime is 22173271. The reversal of 22173264 is 46237122.

It can be written as a sum of positive squares in only one way, i.e., 14288400 + 7884864 = 3780^2 + 2808^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 10714 + ... + 12614.

Almost surely, 2^22173264 is an apocalyptic number.

22173264 is a gapful number since it is divisible by the number (24) 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 22173264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32222733).

22173264 is an abundant number, since it is smaller than the sum of its proper divisors (42272202).

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

22173264 is an equidigital number, since it uses as much as digits as its factorization.

22173264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927 (or 1906 counting only the distinct ones).

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

The square root of 22173264 is about 4708.8495410238. The cubic root of 22173264 is about 280.9376051399.

The spelling of 22173264 in words is "twenty-two million, one hundred seventy-three thousand, two hundred sixty-four".