28320336760 has 64 divisors (see below), whose sum is σ = 67131187200. Its totient is φ = 10722844800.

The previous prime is 28320336743. The next prime is 28320336767. The reversal of 28320336760 is 6763302382.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28320336767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 920425 + ... + 950695.

It is an arithmetic number, because the mean of its divisors is an integer number (1048924800).

Almost surely, 2^28320336760 is an apocalyptic number.

28320336760 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 28320336760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33565593600).

28320336760 is an abundant number, since it is smaller than the sum of its proper divisors (38810850440).

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

28320336760 is a wasteful number, since it uses less digits than its factorization.

28320336760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31532 (or 31528 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 40.

The spelling of 28320336760 in words is "twenty-eight billion, three hundred twenty million, three hundred thirty-six thousand, seven hundred sixty".