28710692239680 has 896 divisors, whose sum is σ = 111796811712000. Its totient is φ = 6878477352960.

The previous prime is 28710692239661. The next prime is 28710692239687. The reversal of 28710692239680 is 8693229601782.

28710692239680 is a `hidden beast` number, since 2 + 87 + 1 + 0 + 6 + 92 + 2 + 396 + 80 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28710692239687) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2981685106 + ... + 2981694734.

Almost surely, 2^{28710692239680} is an apocalyptic number.

28710692239680 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 28710692239680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55898405856000).

28710692239680 is an abundant number, since it is smaller than the sum of its proper divisors (83086119472320).

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

28710692239680 is a wasteful number, since it uses less digits than its factorization.

28710692239680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10032 (or 10016 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 28710692239680 in words is "twenty-eight trillion, seven hundred ten billion, six hundred ninety-two million, two hundred thirty-nine thousand, six hundred eighty".