22139992 has 32 divisors (see below), whose sum is σ = 49082400. Its totient is φ = 9160704.

The previous prime is 22139981. The next prime is 22139993. The reversal of 22139992 is 29993122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22139993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5193 + ... + 8440.

It is an arithmetic number, because the mean of its divisors is an integer number (1533825).

Almost surely, 2^22139992 is an apocalyptic number.

It is an amenable number.

22139992 is an abundant number, since it is smaller than the sum of its proper divisors (26942408).

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

22139992 is a wasteful number, since it uses less digits than its factorization.

22139992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13675 (or 13671 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 22139992 is about 4705.3152923051. The cubic root of 22139992 is about 280.7970148734.

The spelling of 22139992 in words is "twenty-two million, one hundred thirty-nine thousand, nine hundred ninety-two".