28591682700 has 144 divisors (see below), whose sum is σ = 94697383424. Its totient is φ = 6524582400.

The previous prime is 28591682689. The next prime is 28591682729. The reversal of 28591682700 is 728619582.

It is a self number, because there is not a number n which added to its sum of digits gives 28591682700.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1314312 + ... + 1335888.

Almost surely, 2^28591682700 is an apocalyptic number.

28591682700 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 28591682700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47348691712).

28591682700 is an abundant number, since it is smaller than the sum of its proper divisors (66105700724).

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

28591682700 is a wasteful number, since it uses less digits than its factorization.

28591682700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22232 (or 22225 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The spelling of 28591682700 in words is "twenty-eight billion, five hundred ninety-one million, six hundred eighty-two thousand, seven hundred".