308085 has 32 divisors (see below), whose sum is σ = 552960. Its totient is φ = 145728.

The previous prime is 308081. The next prime is 308093. The reversal of 308085 is 580803.

308085 = 171² + 172² + ... + 180².

It is not a de Polignac number, because 308085 - 2² = 308081 is a prime.

It is a Curzon number.

308085 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 308085.

It is not an unprimeable number, because it can be changed into a prime (308081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6532 + ... + 6578.

It is an arithmetic number, because the mean of its divisors is an integer number (17280).

2³⁰⁸⁰⁸⁵ is an apocalyptic number.

It is an amenable number.

308085 is a deficient number, since it is larger than the sum of its proper divisors (244875).

308085 is a wasteful number, since it uses less digits than its factorization.

308085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 308085 is about 555.0540514220. The cubic root of 308085 is about 67.5393460592.

Adding to 308085 its reverse (580803), we get a palindrome (888888).

The spelling of 308085 in words is "three hundred eight thousand, eighty-five".