22129984 has 28 divisors (see below), whose sum is σ = 46228000. Its totient is φ = 10482048.

The previous prime is 22129981. The next prime is 22129999. The reversal of 22129984 is 48992122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22129981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7884 + ... + 10315.

It is an arithmetic number, because the mean of its divisors is an integer number (1651000).

Almost surely, 2^22129984 is an apocalyptic number.

It is an amenable number.

22129984 is an abundant number, since it is smaller than the sum of its proper divisors (24098016).

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

22129984 is a wasteful number, since it uses less digits than its factorization.

22129984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18230 (or 18220 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 22129984 is about 4704.2516939467. The cubic root of 22129984 is about 280.7546986873.

The spelling of 22129984 in words is "twenty-two million, one hundred twenty-nine thousand, nine hundred eighty-four".