82891185 has 16 divisors (see below), whose sum is σ = 142828224. Its totient is φ = 40807872.

The previous prime is 82891183. The next prime is 82891219. The reversal of 82891185 is 58119828.

It is not a de Polignac number, because 82891185 - 2¹ = 82891183 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82891183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212347 + ... + 212736.

It is an arithmetic number, because the mean of its divisors is an integer number (8926764).

Almost surely, 2^82891185 is an apocalyptic number.

It is an amenable number.

82891185 is a deficient number, since it is larger than the sum of its proper divisors (59937039).

82891185 is a wasteful number, since it uses less digits than its factorization.

82891185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425104.

The product of its digits is 46080, while the sum is 42.

The square root of 82891185 is about 9104.4596215261. The cubic root of 82891185 is about 436.0163577877.

The spelling of 82891185 in words is "eighty-two million, eight hundred ninety-one thousand, one hundred eighty-five".