82128232 has 16 divisors (see below), whose sum is σ = 159300900. Its totient is φ = 39648000.

The previous prime is 82128229. The next prime is 82128257. The reversal of 82128232 is 23282128.

It can be written as a sum of positive squares in 2 ways, for example, as 81830116 + 298116 = 9046^2 + 546^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 82128232.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176769 + ... + 177232.

Almost surely, 2^82128232 is an apocalyptic number.

It is an amenable number.

82128232 is a deficient number, since it is larger than the sum of its proper divisors (77172668).

82128232 is a wasteful number, since it uses less digits than its factorization.

82128232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354036 (or 354032 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 82128232 is about 9062.4627999236. The cubic root of 82128232 is about 434.6744946755.

The spelling of 82128232 in words is "eighty-two million, one hundred twenty-eight thousand, two hundred thirty-two".