23183542728 has 24 divisors (see below), whose sum is σ = 62788761750. Its totient is φ = 7727847552.

The previous prime is 23183542687. The next prime is 23183542729. The reversal of 23183542728 is 82724538132.

23183542728 is a `hidden beast` number, since 2 + 3 + 1 + 83 + 542 + 7 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16214966244 + 6968576484 = 127338^2 + 83478^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (23183542729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 160996753 + ... + 160996896.

Almost surely, 2^23183542728 is an apocalyptic number.

It is an amenable number.

23183542728 is an abundant number, since it is smaller than the sum of its proper divisors (39605219022).

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

23183542728 is a wasteful number, since it uses less digits than its factorization.

23183542728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321993661 (or 321993654 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 23183542728 in words is "twenty-three billion, one hundred eighty-three million, five hundred forty-two thousand, seven hundred twenty-eight".