28684239360 has 320 divisors, whose sum is σ = 106948512000. Its totient is φ = 6555795456.

The previous prime is 28684239317. The next prime is 28684239401. The reversal of 28684239360 is 6393248682.

It is a tau number, because it is divible by the number of its divisors (320).

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, 2628796 + ... + 2639684.

It is an arithmetic number, because the mean of its divisors is an integer number (334214100).

Almost surely, 2^28684239360 is an apocalyptic number.

28684239360 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 28684239360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53474256000).

28684239360 is an abundant number, since it is smaller than the sum of its proper divisors (78264272640).

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

28684239360 is an equidigital number, since it uses as much as digits as its factorization.

28684239360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10936 (or 10906 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 51.

The spelling of 28684239360 in words is "twenty-eight billion, six hundred eighty-four million, two hundred thirty-nine thousand, three hundred sixty".