22749544272 has 240 divisors, whose sum is σ = 73195315200. Its totient is φ = 5961466368.

The previous prime is 22749544261. The next prime is 22749544297. The reversal of 22749544272 is 27244594722.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9481729 + ... + 9484127.

It is an arithmetic number, because the mean of its divisors is an integer number (304980480).

Almost surely, 2^22749544272 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 22749544272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36597657600).

22749544272 is an abundant number, since it is smaller than the sum of its proper divisors (50445770928).

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

22749544272 is a wasteful number, since it uses less digits than its factorization.

22749544272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610 (or 2591 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 48.

The spelling of 22749544272 in words is "twenty-two billion, seven hundred forty-nine million, five hundred forty-four thousand, two hundred seventy-two".