82172332 has 12 divisors (see below), whose sum is σ = 156874536. Its totient is φ = 37351040.

The previous prime is 82172329. The next prime is 82172333. The reversal of 82172332 is 23327128.

It is a self number, because there is not a number n which added to its sum of digits gives 82172332.

It is not an unprimeable number, because it can be changed into a prime (82172333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933733 + ... + 933820.

It is an arithmetic number, because the mean of its divisors is an integer number (13072878).

Almost surely, 2^82172332 is an apocalyptic number.

It is an amenable number.

82172332 is a deficient number, since it is larger than the sum of its proper divisors (74702204).

82172332 is a wasteful number, since it uses less digits than its factorization.

82172332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867568 (or 1867566 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 82172332 is about 9064.8955868228. The cubic root of 82172332 is about 434.7522824419.

It can be divided in two parts, 821 and 72332, that added together give a triangular number (73153 = T₃₈₂).

The spelling of 82172332 in words is "eighty-two million, one hundred seventy-two thousand, three hundred thirty-two".