308845 has 8 divisors (see below), whose sum is σ = 390240. Its totient is φ = 234000.

The previous prime is 308827. The next prime is 308849. The reversal of 308845 is 548803.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 308845 - 2⁵ = 308813 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308849) 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 7 ways as a sum of consecutive naturals, for example, 1531 + ... + 1720.

It is an arithmetic number, because the mean of its divisors is an integer number (48780).

2³⁰⁸⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

308845 is a deficient number, since it is larger than the sum of its proper divisors (81395).

308845 is a wasteful number, since it uses less digits than its factorization.

308845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 308845 is about 555.7382477390. The cubic root of 308845 is about 67.5948369713.

The spelling of 308845 in words is "three hundred eight thousand, eight hundred forty-five".