28659643080 has 256 divisors, whose sum is σ = 89426488320. Its totient is φ = 7343702016.

The previous prime is 28659643021. The next prime is 28659643109. The reversal of 28659643080 is 8034695682.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

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, 123002644 + ... + 123002876.

It is an arithmetic number, because the mean of its divisors is an integer number (349322220).

Almost surely, 2^28659643080 is an apocalyptic number.

28659643080 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 28659643080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44713244160).

28659643080 is an abundant number, since it is smaller than the sum of its proper divisors (60766845240).

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

28659643080 is a wasteful number, since it uses less digits than its factorization.

28659643080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 51.

The spelling of 28659643080 in words is "twenty-eight billion, six hundred fifty-nine million, six hundred forty-three thousand, eighty".