22385722 has 4 divisors (see below), whose sum is σ = 33578586. Its totient is φ = 11192860.

The previous prime is 22385707. The next prime is 22385723. The reversal of 22385722 is 22758322.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20967241 + 1418481 = 4579^2 + 1191^2 .

It is a super-2 number, since 2×22385722² = 1002241098922568, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (22385723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5596429 + ... + 5596432.

Almost surely, 2^22385722 is an apocalyptic number.

22385722 is a deficient number, since it is larger than the sum of its proper divisors (11192864).

22385722 is a wasteful number, since it uses less digits than its factorization.

22385722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11192863.

The product of its digits is 13440, while the sum is 31.

The square root of 22385722 is about 4731.3551969811. The cubic root of 22385722 is about 281.8320429029.

The spelling of 22385722 in words is "twenty-two million, three hundred eighty-five thousand, seven hundred twenty-two".