15796729728 has 256 divisors, whose sum is σ = 52395033600. Its totient is φ = 4648900608.

The previous prime is 15796729723. The next prime is 15796729757. The reversal of 15796729728 is 82792769751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15796729723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1025701 + ... + 1040987.

It is an arithmetic number, because the mean of its divisors is an integer number (204668100).

Almost surely, 2^15796729728 is an apocalyptic number.

15796729728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15796729728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26197516800).

15796729728 is an abundant number, since it is smaller than the sum of its proper divisors (36598303872).

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

15796729728 is a wasteful number, since it uses less digits than its factorization.

15796729728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15346 (or 15328 counting only the distinct ones).

The product of its digits is 26671680, while the sum is 63.

The spelling of 15796729728 in words is "fifteen billion, seven hundred ninety-six million, seven hundred twenty-nine thousand, seven hundred twenty-eight".