22231044 has 48 divisors (see below), whose sum is σ = 62879040. Its totient is φ = 6736320.

The previous prime is 22231037. The next prime is 22231049. The reversal of 22231044 is 44013222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22231049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8169 + ... + 10544.

It is an arithmetic number, because the mean of its divisors is an integer number (1309980).

Almost surely, 2^22231044 is an apocalyptic number.

It is an amenable number.

22231044 is an abundant number, since it is smaller than the sum of its proper divisors (40647996).

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

22231044 is a wasteful number, since it uses less digits than its factorization.

22231044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18737 (or 18729 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22231044 is about 4714.9808058994. The cubic root of 22231044 is about 281.1814197231.

Adding to 22231044 its reverse (44013222), we get a palindrome (66244266).

The spelling of 22231044 in words is "twenty-two million, two hundred thirty-one thousand, forty-four".