308340 has 48 divisors (see below), whose sum is σ = 960960. Its totient is φ = 82080.

The previous prime is 308333. The next prime is 308359. The reversal of 308340 is 43803.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255 + ... + 825.

It is an arithmetic number, because the mean of its divisors is an integer number (20020).

2³⁰⁸³⁴⁰ is an apocalyptic number.

308340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (480480).

308340 is an abundant number, since it is smaller than the sum of its proper divisors (652620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

308340 is a wasteful number, since it uses less digits than its factorization.

308340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 308340 is about 555.2837112684. The cubic root of 308340 is about 67.5579748832.

The spelling of 308340 in words is "three hundred eight thousand, three hundred forty".