82307172 has 48 divisors (see below), whose sum is σ = 198076032. Its totient is φ = 26584320.

The previous prime is 82307171. The next prime is 82307189. The reversal of 82307172 is 27170328.

It is not an unprimeable number, because it can be changed into a prime (82307171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84633 + ... + 85599.

It is an arithmetic number, because the mean of its divisors is an integer number (4126584).

Almost surely, 2^82307172 is an apocalyptic number.

82307172 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

82307172 is an abundant number, since it is smaller than the sum of its proper divisors (115768860).

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

82307172 is a wasteful number, since it uses less digits than its factorization.

82307172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1186 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 82307172 is about 9072.3300204523. The cubic root of 82307172 is about 434.9899535267.

The spelling of 82307172 in words is "eighty-two million, three hundred seven thousand, one hundred seventy-two".