82173916 has 24 divisors (see below), whose sum is σ = 157313520. Its totient is φ = 37248000.

The previous prime is 82173913. The next prime is 82173919. The reversal of 82173916 is 61937128.

It is an interprime number because it is at equal distance from previous prime (82173913) and next prime (82173919).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14716 + ... + 19516.

It is an arithmetic number, because the mean of its divisors is an integer number (6554730).

Almost surely, 2^82173916 is an apocalyptic number.

It is an amenable number.

82173916 is a deficient number, since it is larger than the sum of its proper divisors (75139604).

82173916 is a wasteful number, since it uses less digits than its factorization.

82173916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205 (or 5203 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 82173916 is about 9064.9829564098. The cubic root of 82173916 is about 434.7550759336.

The spelling of 82173916 in words is "eighty-two million, one hundred seventy-three thousand, nine hundred sixteen".