28965752880 has 160 divisors (see below), whose sum is σ = 95877720576. Its totient is φ = 7216484352.

The previous prime is 28965752869. The next prime is 28965752917. The reversal of 28965752880 is 8825756982.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176344 + ... + 298376.

Almost surely, 2^28965752880 is an apocalyptic number.

28965752880 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 28965752880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47938860288).

28965752880 is an abundant number, since it is smaller than the sum of its proper divisors (66911967696).

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

28965752880 is a wasteful number, since it uses less digits than its factorization.

28965752880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122115 (or 122109 counting only the distinct ones).

The product of its (nonzero) digits is 19353600, while the sum is 60.

The spelling of 28965752880 in words is "twenty-eight billion, nine hundred sixty-five million, seven hundred fifty-two thousand, eight hundred eighty".