28668720360 has 256 divisors, whose sum is σ = 101586585600. Its totient is φ = 6335511552.

The previous prime is 28668720343. The next prime is 28668720391. The reversal of 28668720360 is 6302786682.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5063211 + ... + 5068869.

It is an arithmetic number, because the mean of its divisors is an integer number (396822600).

Almost surely, 2^28668720360 is an apocalyptic number.

28668720360 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 28668720360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50793292800).

28668720360 is an abundant number, since it is smaller than the sum of its proper divisors (72917865240).

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

28668720360 is a wasteful number, since it uses less digits than its factorization.

28668720360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5880 (or 5876 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 28668720360 in words is "twenty-eight billion, six hundred sixty-eight million, seven hundred twenty thousand, three hundred sixty".