82130172 has 24 divisors (see below), whose sum is σ = 196094976. Its totient is φ = 26739888.

The previous prime is 82130161. The next prime is 82130219. The reversal of 82130172 is 27103128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79068 + ... + 80099.

It is an arithmetic number, because the mean of its divisors is an integer number (8170624).

Almost surely, 2^82130172 is an apocalyptic number.

It is an amenable number.

82130172 is an abundant number, since it is smaller than the sum of its proper divisors (113964804).

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

82130172 is a wasteful number, since it uses less digits than its factorization.

82130172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159217 (or 159215 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 82130172 is about 9062.5698342137. The cubic root of 82130172 is about 434.6779172171.

The spelling of 82130172 in words is "eighty-two million, one hundred thirty thousand, one hundred seventy-two".