22749944 has 64 divisors (see below), whose sum is σ = 53913600. Its totient is φ = 8769024.

The previous prime is 22749941. The next prime is 22749953. The reversal of 22749944 is 44994722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22749941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21377 + ... + 22415.

It is an arithmetic number, because the mean of its divisors is an integer number (842400).

Almost surely, 2^22749944 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 22749944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26956800).

22749944 is an abundant number, since it is smaller than the sum of its proper divisors (31163656).

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

22749944 is a wasteful number, since it uses less digits than its factorization.

22749944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1088 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 22749944 is about 4769.6901366860. The cubic root of 22749944 is about 283.3523229103.

The spelling of 22749944 in words is "twenty-two million, seven hundred forty-nine thousand, nine hundred forty-four".