28160000000 has 256 divisors, whose sum is σ = 76798631520. Its totient is φ = 10240000000.

The previous prime is 28159999999. The next prime is 28160000009. The reversal of 28160000000 is 6182.

It is a tau number, because it is divible by the number of its divisors (256).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28160000009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2559999995 + ... + 2560000005.

Almost surely, 2^28160000000 is an apocalyptic number.

28160000000 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 28160000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38399315760).

28160000000 is an abundant number, since it is smaller than the sum of its proper divisors (48638631520).

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

28160000000 is an frugal number, since it uses more digits than its factorization.

28160000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 18 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 28160000000 its reverse (6182), we get a palindrome (28160006182).

The spelling of 28160000000 in words is "twenty-eight billion, one hundred sixty million", and thus it is an aban number.