22749528428 has 24 divisors (see below), whose sum is σ = 43438163664. Its totient is φ = 10338969600.

The previous prime is 22749528421. The next prime is 22749528433. The reversal of 22749528428 is 82482594722.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22749528428.

It is not an unprimeable number, because it can be changed into a prime (22749528421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245276 + ... + 325052.

It is an arithmetic number, because the mean of its divisors is an integer number (1809923486).

Almost surely, 2^22749528428 is an apocalyptic number.

It is an amenable number.

22749528428 is a deficient number, since it is larger than the sum of its proper divisors (20688635236).

22749528428 is a wasteful number, since it uses less digits than its factorization.

22749528428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86273 (or 86271 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 53.

The spelling of 22749528428 in words is "twenty-two billion, seven hundred forty-nine million, five hundred twenty-eight thousand, four hundred twenty-eight".