28059551860 has 48 divisors (see below), whose sum is σ = 59501836800. Its totient is φ = 11114421120.

The previous prime is 28059551857. The next prime is 28059551869. The reversal of 28059551860 is 6815595082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28059551869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 972157 + ... + 1000603.

It is an arithmetic number, because the mean of its divisors is an integer number (1239621600).

Almost surely, 2^28059551860 is an apocalyptic number.

28059551860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28059551860 is an abundant number, since it is smaller than the sum of its proper divisors (31442284940).

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

28059551860 is a wasteful number, since it uses less digits than its factorization.

28059551860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28936 (or 28934 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 49.

The spelling of 28059551860 in words is "twenty-eight billion, fifty-nine million, five hundred fifty-one thousand, eight hundred sixty".