28108574720 has 208 divisors, whose sum is σ = 69298219008. Its totient is φ = 10941235200.

The previous prime is 28108574719. The next prime is 28108574729. The reversal of 28108574720 is 2747580182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28108574729) by changing a digit.

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, 221327297 + ... + 221327423.

Almost surely, 2^28108574720 is an apocalyptic number.

28108574720 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 28108574720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34649109504).

28108574720 is an abundant number, since it is smaller than the sum of its proper divisors (41189644288).

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

28108574720 is a wasteful number, since it uses less digits than its factorization.

28108574720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 342 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 44.

The spelling of 28108574720 in words is "twenty-eight billion, one hundred eight million, five hundred seventy-four thousand, seven hundred twenty".