28259535120 has 160 divisors (see below), whose sum is σ = 91681632000. Its totient is φ = 7187085312.

The previous prime is 28259535079. The next prime is 28259535173. The reversal of 28259535120 is 2153595282.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1919146 + ... + 1933814.

It is an arithmetic number, because the mean of its divisors is an integer number (573010200).

Almost surely, 2^28259535120 is an apocalyptic number.

28259535120 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 28259535120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45840816000).

28259535120 is an abundant number, since it is smaller than the sum of its proper divisors (63422096880).

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

28259535120 is a wasteful number, since it uses less digits than its factorization.

28259535120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15057 (or 15051 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 28259535120 in words is "twenty-eight billion, two hundred fifty-nine million, five hundred thirty-five thousand, one hundred twenty".