82127172 has 24 divisors (see below), whose sum is σ = 193941216. Its totient is φ = 27045568.

The previous prime is 82127147. The next prime is 82127173. The reversal of 82127172 is 27172128.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (82127173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40233 + ... + 42224.

It is an arithmetic number, because the mean of its divisors is an integer number (8080884).

Almost surely, 2^82127172 is an apocalyptic number.

It is an amenable number.

82127172 is an abundant number, since it is smaller than the sum of its proper divisors (111814044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82127172 is a wasteful number, since it uses less digits than its factorization.

82127172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82547 (or 82545 counting only the distinct ones).

The product of its digits is 3136, while the sum is 30.

The square root of 82127172 is about 9062.4043167363. The cubic root of 82127172 is about 434.6726246042.

The spelling of 82127172 in words is "eighty-two million, one hundred twenty-seven thousand, one hundred seventy-two".