82019227 has 4 divisors (see below), whose sum is σ = 82141056. Its totient is φ = 81897400.

The previous prime is 82019191. The next prime is 82019239. The reversal of 82019227 is 72291028.

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

It is a cyclic number.

It is not a de Polignac number, because 82019227 - 2⁷ = 82019099 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82019527) 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, 59899 + ... + 61252.

It is an arithmetic number, because the mean of its divisors is an integer number (20535264).

Almost surely, 2^82019227 is an apocalyptic number.

82019227 is a deficient number, since it is larger than the sum of its proper divisors (121829).

82019227 is a wasteful number, since it uses less digits than its factorization.

82019227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121828.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 82019227 is about 9056.4467093888. The cubic root of 82019227 is about 434.4821017548.

The spelling of 82019227 in words is "eighty-two million, nineteen thousand, two hundred twenty-seven".