22381872 has 40 divisors (see below), whose sum is σ = 58091520. Its totient is φ = 7425600.

The previous prime is 22381871. The next prime is 22381897. The reversal of 22381872 is 27818322.

It is not an unprimeable number, because it can be changed into a prime (22381871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10497 + ... + 12447.

It is an arithmetic number, because the mean of its divisors is an integer number (1452288).

Almost surely, 2^22381872 is an apocalyptic number.

It is an amenable number.

22381872 is an abundant number, since it is smaller than the sum of its proper divisors (35709648).

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

22381872 is a wasteful number, since it uses less digits than its factorization.

22381872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201 (or 2195 counting only the distinct ones).

The product of its digits is 10752, while the sum is 33.

The square root of 22381872 is about 4730.9483193119. The cubic root of 22381872 is about 281.8158850505.

The spelling of 22381872 in words is "twenty-two million, three hundred eighty-one thousand, eight hundred seventy-two".