28060637720 has 32 divisors (see below), whose sum is σ = 63376521120. Its totient is φ = 11181573120.

The previous prime is 28060637641. The next prime is 28060637779. The reversal of 28060637720 is 2773606082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323161 + ... + 1344200.

It is an arithmetic number, because the mean of its divisors is an integer number (1980516285).

Almost surely, 2^28060637720 is an apocalyptic number.

28060637720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28060637720 is an abundant number, since it is smaller than the sum of its proper divisors (35315883400).

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

28060637720 is a wasteful number, since it uses less digits than its factorization.

28060637720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2667635 (or 2667631 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 28060637720 in words is "twenty-eight billion, sixty million, six hundred thirty-seven thousand, seven hundred twenty".