28980218880 has 264 divisors, whose sum is σ = 104139274512. Its totient is φ = 7727726592.

The previous prime is 28980218851. The next prime is 28980218881. The reversal of 28980218880 is 8881208982.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28980218881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232514 + ... + 1255806.

Almost surely, 2^28980218880 is an apocalyptic number.

28980218880 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 28980218880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52069637256).

28980218880 is an abundant number, since it is smaller than the sum of its proper divisors (75159055632).

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

28980218880 is an equidigital number, since it uses as much as digits as its factorization.

28980218880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23333 (or 23303 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 54.

The spelling of 28980218880 in words is "twenty-eight billion, nine hundred eighty million, two hundred eighteen thousand, eight hundred eighty".