22451232 has 48 divisors (see below), whose sum is σ = 59566752. Its totient is φ = 7403520.

The previous prime is 22451213. The next prime is 22451257. The reversal of 22451232 is 23215422.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 22451199 and 22451208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8107 + ... + 10517.

It is an arithmetic number, because the mean of its divisors is an integer number (1240974).

Almost surely, 2^22451232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22451232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29783376).

22451232 is an abundant number, since it is smaller than the sum of its proper divisors (37115520).

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

22451232 is a wasteful number, since it uses less digits than its factorization.

22451232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2513 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 22451232 is about 4738.2731031463. The cubic root of 22451232 is about 282.1066947007.

Adding to 22451232 its reverse (23215422), we get a palindrome (45666654).

The spelling of 22451232 in words is "twenty-two million, four hundred fifty-one thousand, two hundred thirty-two".