8216728101 has 16 divisors (see below), whose sum is σ = 12174465600. Its totient is φ = 5477127984.

The previous prime is 8216728097. The next prime is 8216728139. The reversal of 8216728101 is 1018276128.

It is not a de Polignac number, because 8216728101 - 2² = 8216728097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216728001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 288730 + ... + 315908.

It is an arithmetic number, because the mean of its divisors is an integer number (760904100).

Almost surely, 2^8216728101 is an apocalyptic number.

It is an amenable number.

8216728101 is a deficient number, since it is larger than the sum of its proper divisors (3957737499).

8216728101 is a wasteful number, since it uses less digits than its factorization.

8216728101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38385 (or 38379 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 8216728101 is about 90646.1698087680. The cubic root of 8216728101 is about 2017.8999922773.

The spelling of 8216728101 in words is "eight billion, two hundred sixteen million, seven hundred twenty-eight thousand, one hundred one".