82173912 has 16 divisors (see below), whose sum is σ = 205434840. Its totient is φ = 27391296.

The previous prime is 82173899. The next prime is 82173913. The reversal of 82173912 is 21937128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82173913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1711933 + ... + 1711980.

Almost surely, 2^82173912 is an apocalyptic number.

It is an amenable number.

82173912 is an abundant number, since it is smaller than the sum of its proper divisors (123260928).

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

82173912 is a wasteful number, since it uses less digits than its factorization.

82173912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3423922 (or 3423918 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 82173912 is about 9064.9827357806. The cubic root of 82173912 is about 434.7550688794.

The spelling of 82173912 in words is "eighty-two million, one hundred seventy-three thousand, nine hundred twelve".