28809718060 has 48 divisors (see below), whose sum is σ = 62056653120. Its totient is φ = 11230928640.

The previous prime is 28809718057. The next prime is 28809718079. The reversal of 28809718060 is 6081790882.

It is a junction number, because it is equal to n+sod(n) for n = 28809717995 and 28809718013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24657 + ... + 241303.

It is an arithmetic number, because the mean of its divisors is an integer number (1292846940).

Almost surely, 2^28809718060 is an apocalyptic number.

28809718060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28809718060 is an abundant number, since it is smaller than the sum of its proper divisors (33246935060).

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

28809718060 is a wasteful number, since it uses less digits than its factorization.

28809718060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216826 (or 216824 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 49.

The spelling of 28809718060 in words is "twenty-eight billion, eight hundred nine million, seven hundred eighteen thousand, sixty".