8272728191 has 8 divisors (see below), whose sum is σ = 10181819424. Its totient is φ = 6545455200.

The previous prime is 8272728157. The next prime is 8272728223. The reversal of 8272728191 is 1918272728.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8272728191 - 2⁶ = 8272728127 is a prime.

It is a super-2 number, since 2×8272728191² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8272728091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45454460 + ... + 45454641.

It is an arithmetic number, because the mean of its divisors is an integer number (1272727428).

Almost surely, 2^8272728191 is an apocalyptic number.

8272728191 is a deficient number, since it is larger than the sum of its proper divisors (1909091233).

8272728191 is a wasteful number, since it uses less digits than its factorization.

8272728191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90909121.

The product of its digits is 225792, while the sum is 47.

The square root of 8272728191 is about 90954.5391445639. The cubic root of 8272728191 is about 2022.4738660083.

The spelling of 8272728191 in words is "eight billion, two hundred seventy-two million, seven hundred twenty-eight thousand, one hundred ninety-one".