82028091 has 4 divisors (see below), whose sum is σ = 109370792. Its totient is φ = 54685392.

The previous prime is 82028087. The next prime is 82028099. The reversal of 82028091 is 19082028.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82028091 - 2² = 82028087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82028099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13671346 + ... + 13671351.

It is an arithmetic number, because the mean of its divisors is an integer number (27342698).

Almost surely, 2^82028091 is an apocalyptic number.

82028091 is a deficient number, since it is larger than the sum of its proper divisors (27342701).

82028091 is a wasteful number, since it uses less digits than its factorization.

82028091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27342700.

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 82028091 is about 9056.9360713213. The cubic root of 82028091 is about 434.4977530062.

The spelling of 82028091 in words is "eighty-two million, twenty-eight thousand, ninety-one".