28108320000 has 360 divisors, whose sum is σ = 96548094720. Its totient is φ = 7249920000.

The previous prime is 28108319923. The next prime is 28108320011. The reversal of 28108320000 is 2380182.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14879056 + ... + 14880944.

It is an arithmetic number, because the mean of its divisors is an integer number (268189152).

Almost surely, 2^28108320000 is an apocalyptic number.

28108320000 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 28108320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48274047360).

28108320000 is an abundant number, since it is smaller than the sum of its proper divisors (68439774720).

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

28108320000 is an equidigital number, since it uses as much as digits as its factorization.

28108320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959 (or 1930 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The spelling of 28108320000 in words is "twenty-eight billion, one hundred eight million, three hundred twenty thousand".