22044312 has 40 divisors (see below), whose sum is σ = 61746300. Its totient is φ = 7347888.

The previous prime is 22044311. The next prime is 22044353. The reversal of 22044312 is 21344022.

22044312 is a `hidden beast` number, since 220 + 443 + 1 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22044311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16362 + ... + 17657.

Almost surely, 2^22044312 is an apocalyptic number.

It is an amenable number.

22044312 is an abundant number, since it is smaller than the sum of its proper divisors (39701988).

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

22044312 is a wasteful number, since it uses less digits than its factorization.

22044312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34037 (or 34024 counting only the distinct ones).

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

The square root of 22044312 is about 4695.1370587023. The cubic root of 22044312 is about 280.3919341217.

Adding to 22044312 its reverse (21344022), we get a palindrome (43388334).

The spelling of 22044312 in words is "twenty-two million, forty-four thousand, three hundred twelve".