8936807929728 has 128 divisors (see below), whose sum is σ = 27133694016000. Its totient is φ = 2552987953152.

The previous prime is 8936807929703. The next prime is 8936807929757. The reversal of 8936807929728 is 8279297086398.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×8936807929728² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17786013 + ... + 18281571.

It is an arithmetic number, because the mean of its divisors is an integer number (211981984500).

Almost surely, 2^{8936807929728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8936807929728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13566847008000).

8936807929728 is an abundant number, since it is smaller than the sum of its proper divisors (18196886086272).

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

8936807929728 is a wasteful number, since it uses less digits than its factorization.

8936807929728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502292 (or 502280 counting only the distinct ones).

The product of its (nonzero) digits is 1316818944, while the sum is 78.

The spelling of 8936807929728 in words is "eight trillion, nine hundred thirty-six billion, eight hundred seven million, nine hundred twenty-nine thousand, seven hundred twenty-eight".