82171276 has 48 divisors (see below), whose sum is σ = 166239360. Its totient is φ = 35147520.

The previous prime is 82171273. The next prime is 82171283. The reversal of 82171276 is 67217128.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (82171273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189556 + ... + 189988.

It is an arithmetic number, because the mean of its divisors is an integer number (3463320).

Almost surely, 2^82171276 is an apocalyptic number.

It is an amenable number.

82171276 is an abundant number, since it is smaller than the sum of its proper divisors (84068084).

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

82171276 is a wasteful number, since it uses less digits than its factorization.

82171276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694 (or 692 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 82171276 is about 9064.8373399637. The cubic root of 82171276 is about 434.7504200941.

The spelling of 82171276 in words is "eighty-two million, one hundred seventy-one thousand, two hundred seventy-six".