22065472 has 56 divisors (see below), whose sum is σ = 51462432. Its totient is φ = 9254400.

The previous prime is 22065443. The next prime is 22065481. The reversal of 22065472 is 27456022.

It is a self number, because there is not a number n which added to its sum of digits gives 22065472.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7947 + ... + 10357.

It is an arithmetic number, because the mean of its divisors is an integer number (918972).

Almost surely, 2^22065472 is an apocalyptic number.

22065472 is a gapful number since it is divisible by the number (22) 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 22065472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25731216).

22065472 is an abundant number, since it is smaller than the sum of its proper divisors (29396960).

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

22065472 is a wasteful number, since it uses less digits than its factorization.

22065472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2447 (or 2437 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 22065472 is about 4697.3899135584. The cubic root of 22065472 is about 280.4816200835.

The spelling of 22065472 in words is "twenty-two million, sixty-five thousand, four hundred seventy-two".