22123992 has 64 divisors (see below), whose sum is σ = 60802560. Its totient is φ = 6652800.

The previous prime is 22123979. The next prime is 22124009. The reversal of 22123992 is 29932122.

It is a happy number.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47553 + ... + 48015.

It is an arithmetic number, because the mean of its divisors is an integer number (950040).

Almost surely, 2^22123992 is an apocalyptic number.

22123992 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 22123992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30401280).

22123992 is an abundant number, since it is smaller than the sum of its proper divisors (38678568).

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

22123992 is a wasteful number, since it uses less digits than its factorization.

22123992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 660 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 22123992 is about 4703.6147801452. The cubic root of 22123992 is about 280.7293569909.

The spelling of 22123992 in words is "twenty-two million, one hundred twenty-three thousand, nine hundred ninety-two".