28580791680 has 1280 divisors, whose sum is σ = 127641951360. Its totient is φ = 5945425920.

The previous prime is 28580791661. The next prime is 28580791693. The reversal of 28580791680 is 8619708582.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 252927304 + ... + 252927416.

Almost surely, 2^28580791680 is an apocalyptic number.

28580791680 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 28580791680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63820975680).

28580791680 is an abundant number, since it is smaller than the sum of its proper divisors (99061159680).

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

28580791680 is a wasteful number, since it uses less digits than its factorization.

28580791680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The spelling of 28580791680 in words is "twenty-eight billion, five hundred eighty million, seven hundred ninety-one thousand, six hundred eighty".