28089180000 has 600 divisors, whose sum is σ = 118023432912. Its totient is φ = 6417792000.

The previous prime is 28089179971. The next prime is 28089180047. The reversal of 28089180000 is 8198082.

It is a tau number, because it is divible by the number of its divisors (600).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 99 ways as a sum of consecutive naturals, for example, 11338762 + ... + 11341238.

Almost surely, 2^28089180000 is an apocalyptic number.

28089180000 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 28089180000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59011716456).

28089180000 is an abundant number, since it is smaller than the sum of its proper divisors (89934252912).

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

28089180000 is an equidigital number, since it uses as much as digits as its factorization.

28089180000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526 (or 2494 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The spelling of 28089180000 in words is "twenty-eight billion, eighty-nine million, one hundred eighty thousand".