22031144 has 16 divisors (see below), whose sum is σ = 41360820. Its totient is φ = 11001600.

The previous prime is 22031137. The next prime is 22031159. The reversal of 22031144 is 44113022.

It can be written as a sum of positive squares in 2 ways, for example, as 17322244 + 4708900 = 4162^2 + 2170^2 .

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, 8462 + ... + 10754.

Almost surely, 2^22031144 is an apocalyptic number.

It is an amenable number.

22031144 is a deficient number, since it is larger than the sum of its proper divisors (19329676).

22031144 is a wasteful number, since it uses less digits than its factorization.

22031144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500 (or 3496 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 22031144 is about 4693.7345472449. The cubic root of 22031144 is about 280.3360930140.

Adding to 22031144 its reverse (44113022), we get a palindrome (66144166).

The spelling of 22031144 in words is "twenty-two million, thirty-one thousand, one hundred forty-four".