82173284 has 6 divisors (see below), whose sum is σ = 143803254. Its totient is φ = 41086640.

The previous prime is 82173241. The next prime is 82173361. The reversal of 82173284 is 48237128.

It can be written as a sum of positive squares in only one way, i.e., 56670784 + 25502500 = 7528^2 + 5050^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10271657 + ... + 10271664.

It is an arithmetic number, because the mean of its divisors is an integer number (23967209).

Almost surely, 2^82173284 is an apocalyptic number.

It is an amenable number.

82173284 is a deficient number, since it is larger than the sum of its proper divisors (61629970).

82173284 is a wasteful number, since it uses less digits than its factorization.

82173284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20543325 (or 20543323 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 82173284 is about 9064.9480969281. The cubic root of 82173284 is about 434.7539613629.

The spelling of 82173284 in words is "eighty-two million, one hundred seventy-three thousand, two hundred eighty-four".