22381472 has 24 divisors (see below), whose sum is σ = 44688672. Its totient is φ = 11032000.

The previous prime is 22381459. The next prime is 22381483. The reversal of 22381472 is 27418322.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2654 + ... + 7197.

It is an arithmetic number, because the mean of its divisors is an integer number (1862028).

Almost surely, 2^22381472 is an apocalyptic number.

It is an amenable number.

22381472 is a deficient number, since it is larger than the sum of its proper divisors (22307200).

22381472 is an equidigital number, since it uses as much as digits as its factorization.

22381472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9932 (or 9924 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 22381472 is about 4730.9060443006. The cubic root of 22381472 is about 281.8142062063.

Adding to 22381472 its reverse (27418322), we get a palindrome (49799794).

The spelling of 22381472 in words is "twenty-two million, three hundred eighty-one thousand, four hundred seventy-two".