28012593660 has 48 divisors (see below), whose sum is σ = 78448546176. Its totient is φ = 7468759872.

The previous prime is 28012593649. The next prime is 28012593673. The reversal of 28012593660 is 6639521082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 349299 + ... + 421941.

It is an arithmetic number, because the mean of its divisors is an integer number (1634344712).

Almost surely, 2^28012593660 is an apocalyptic number.

28012593660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28012593660 is an abundant number, since it is smaller than the sum of its proper divisors (50435952516).

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

28012593660 is a wasteful number, since it uses less digits than its factorization.

28012593660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79082 (or 79080 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 28012593660 in words is "twenty-eight billion, twelve million, five hundred ninety-three thousand, six hundred sixty".