28989183960 has 320 divisors, whose sum is σ = 106559608320. Its totient is φ = 7010115840.

The previous prime is 28989183941. The next prime is 28989184009. The reversal of 28989183960 is 6938198982.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 19494337 + ... + 19495823.

It is an arithmetic number, because the mean of its divisors is an integer number (332998776).

Almost surely, 2^28989183960 is an apocalyptic number.

28989183960 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 28989183960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53279804160).

28989183960 is an abundant number, since it is smaller than the sum of its proper divisors (77570424360).

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

28989183960 is a wasteful number, since it uses less digits than its factorization.

28989183960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2055 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 63.

The spelling of 28989183960 in words is "twenty-eight billion, nine hundred eighty-nine million, one hundred eighty-three thousand, nine hundred sixty".