82173480 has 128 divisors (see below), whose sum is σ = 270950400. Its totient is φ = 19844352.

The previous prime is 82173439. The next prime is 82173517. The reversal of 82173480 is 8437128.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51657 + ... + 53223.

It is an arithmetic number, because the mean of its divisors is an integer number (2116800).

Almost surely, 2^82173480 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 82173480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135475200).

82173480 is an abundant number, since it is smaller than the sum of its proper divisors (188776920).

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

82173480 is a wasteful number, since it uses less digits than its factorization.

82173480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1619 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 82173480 is about 9064.9589077943. The cubic root of 82173480 is about 434.7543070215.

The spelling of 82173480 in words is "eighty-two million, one hundred seventy-three thousand, four hundred eighty".