28686790080 has 504 divisors, whose sum is σ = 113162102352. Its totient is φ = 6644072448.

The previous prime is 28686790073. The next prime is 28686790127. The reversal of 28686790080 is 8009768682.

It is a junction number, because it is equal to n+sod(n) for n = 28686789999 and 28686790026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 8272507 + ... + 8275973.

Almost surely, 2^28686790080 is an apocalyptic number.

28686790080 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 28686790080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56581051176).

28686790080 is an abundant number, since it is smaller than the sum of its proper divisors (84475312272).

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

28686790080 is a wasteful number, since it uses less digits than its factorization.

28686790080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3533 (or 3507 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 28686790080 in words is "twenty-eight billion, six hundred eighty-six million, seven hundred ninety thousand, eighty".