22142372 has 24 divisors (see below), whose sum is σ = 46616640. Its totient is φ = 8989920.

The previous prime is 22142359. The next prime is 22142383. The reversal of 22142372 is 27324122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20279 + ... + 21342.

It is an arithmetic number, because the mean of its divisors is an integer number (1942360).

Almost surely, 2^22142372 is an apocalyptic number.

It is an amenable number.

22142372 is an abundant number, since it is smaller than the sum of its proper divisors (24474268).

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

22142372 is a wasteful number, since it uses less digits than its factorization.

22142372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41651 (or 41649 counting only the distinct ones).

The product of its digits is 1344, while the sum is 23.

The square root of 22142372 is about 4705.5681909840. The cubic root of 22142372 is about 280.8070761982.

Adding to 22142372 its reverse (27324122), we get a palindrome (49466494).

The spelling of 22142372 in words is "twenty-two million, one hundred forty-two thousand, three hundred seventy-two".