28320729000 has 64 divisors (see below), whose sum is σ = 88360683840. Its totient is φ = 7552193600.

The previous prime is 28320728987. The next prime is 28320729079. The reversal of 28320729000 is 92702382.

It is an unprimeable number.

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, 4717122 + ... + 4723121.

It is an arithmetic number, because the mean of its divisors is an integer number (1380635685).

Almost surely, 2^28320729000 is an apocalyptic number.

28320729000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28320729000 is an abundant number, since it is smaller than the sum of its proper divisors (60039954840).

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

28320729000 is a wasteful number, since it uses less digits than its factorization.

28320729000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9440267 (or 9440253 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 28320729000 in words is "twenty-eight billion, three hundred twenty million, seven hundred twenty-nine thousand".