22164672 has 56 divisors (see below), whose sum is σ = 59553856. Its totient is φ = 7273728.

The previous prime is 22164647. The next prime is 22164677. The reversal of 22164672 is 27646122.

It is not an unprimeable number, because it can be changed into a prime (22164677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12003 + ... + 13725.

Almost surely, 2^22164672 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 22164672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29776928).

22164672 is an abundant number, since it is smaller than the sum of its proper divisors (37389184).

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

22164672 is a wasteful number, since it uses less digits than its factorization.

22164672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805 (or 1795 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 22164672 is about 4707.9371278725. The cubic root of 22164672 is about 280.9013132683.

The spelling of 22164672 in words is "twenty-two million, one hundred sixty-four thousand, six hundred seventy-two".