82173560 has 64 divisors (see below), whose sum is σ = 218142720. Its totient is φ = 27262080.

The previous prime is 82173523. The next prime is 82173577. The reversal of 82173560 is 6537128.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3947 + ... + 13413.

It is an arithmetic number, because the mean of its divisors is an integer number (3408480).

Almost surely, 2^82173560 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82173560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109071360).

82173560 is an abundant number, since it is smaller than the sum of its proper divisors (135969160).

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

82173560 is a wasteful number, since it uses less digits than its factorization.

82173560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9516 (or 9512 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 82173560 is about 9064.9633203891. The cubic root of 82173560 is about 434.7544481065.

The spelling of 82173560 in words is "eighty-two million, one hundred seventy-three thousand, five hundred sixty".