22245372 has 72 divisors (see below), whose sum is σ = 58378320. Its totient is φ = 7138560.

The previous prime is 22245361. The next prime is 22245397. The reversal of 22245372 is 27354222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 169747 + ... + 169877.

It is an arithmetic number, because the mean of its divisors is an integer number (810810).

Almost surely, 2^22245372 is an apocalyptic number.

It is a pronic number, being equal to 4716×4717.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22245372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29189160).

22245372 is an abundant number, since it is smaller than the sum of its proper divisors (36132948).

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

22245372 is a wasteful number, since it uses less digits than its factorization.

22245372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 278 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 22245372 is about 4716.4999734973. The cubic root of 22245372 is about 281.2418142803.

Adding to 22245372 its reverse (27354222), we get a palindrome (49599594).

The spelling of 22245372 in words is "twenty-two million, two hundred forty-five thousand, three hundred seventy-two".