28508160000 has 400 divisors, whose sum is σ = 98272449000. Its totient is φ = 7340032000.

The previous prime is 28508159969. The next prime is 28508160019. The reversal of 28508160000 is 6180582.

It is a tau number, because it is divible by the number of its divisors (400).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 28508160000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 983039986 + ... + 983040014.

Almost surely, 2^28508160000 is an apocalyptic number.

28508160000 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 28508160000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49136224500).

28508160000 is an abundant number, since it is smaller than the sum of its proper divisors (69764289000).

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

28508160000 is an frugal number, since it uses more digits than its factorization.

28508160000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The spelling of 28508160000 in words is "twenty-eight billion, five hundred eight million, one hundred sixty thousand".