82280185 has 12 divisors (see below), whose sum is σ = 106916652. Its totient is φ = 60760128.

The previous prime is 82280179. The next prime is 82280189. The reversal of 82280185 is 58108228.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 38402809 + 43877376 = 6197^2 + 6624^2 .

It is not a de Polignac number, because 82280185 - 2²³ = 73891577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82280185.

It is not an unprimeable number, because it can be changed into a prime (82280189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47842 + ... + 49531.

It is an arithmetic number, because the mean of its divisors is an integer number (8909721).

Almost surely, 2^82280185 is an apocalyptic number.

It is an amenable number.

82280185 is a deficient number, since it is larger than the sum of its proper divisors (24636467).

82280185 is a wasteful number, since it uses less digits than its factorization.

82280185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97404 (or 97391 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 82280185 is about 9070.8425738737. The cubic root of 82280185 is about 434.9424066085.

The spelling of 82280185 in words is "eighty-two million, two hundred eighty thousand, one hundred eighty-five".