82728187 has 2 divisors, whose sum is σ = 82728188. Its totient is φ = 82728186.

The previous prime is 82728179. The next prime is 82728301. The reversal of 82728187 is 78182728.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 82728187 - 2³ = 82728179 is a prime.

It is not a weakly prime, because it can be changed into another prime (82728127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41364093 + 41364094.

It is an arithmetic number, because the mean of its divisors is an integer number (41364094).

Almost surely, 2^82728187 is an apocalyptic number.

82728187 is a deficient number, since it is larger than the sum of its proper divisors (1).

82728187 is an equidigital number, since it uses as much as digits as its factorization.

82728187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100352, while the sum is 43.

The square root of 82728187 is about 9095.5036693962. The cubic root of 82728187 is about 435.7303747070.

The spelling of 82728187 in words is "eighty-two million, seven hundred twenty-eight thousand, one hundred eighty-seven".