28352793900 has 288 divisors, whose sum is σ = 86267478528. Its totient is φ = 7183411200.

The previous prime is 28352793893. The next prime is 28352793929. The reversal of 28352793900 is 939725382.

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 28352793900.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 107805169 + ... + 107805431.

It is an arithmetic number, because the mean of its divisors is an integer number (299539856).

Almost surely, 2^28352793900 is an apocalyptic number.

28352793900 is a gapful number since it is divisible by the number (20) 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 28352793900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43133739264).

28352793900 is an abundant number, since it is smaller than the sum of its proper divisors (57914684628).

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

28352793900 is a wasteful number, since it uses less digits than its factorization.

28352793900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 28352793900 in words is "twenty-eight billion, three hundred fifty-two million, seven hundred ninety-three thousand, nine hundred".