338840 has 32 divisors (see below), whose sum is σ = 784080. Its totient is φ = 131712.

The previous prime is 338839. The next prime is 338851. The reversal of 338840 is 48833.

It is a super-2 number, since 2×338840² = 229625091200, which contains 22 as substring.

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 338840.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1622 + ... + 1818.

2³³⁸⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 338840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (392040).

338840 is an abundant number, since it is smaller than the sum of its proper divisors (445240).

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

338840 is a wasteful number, since it uses less digits than its factorization.

338840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 338840 is about 582.0996478267. The cubic root of 338840 is about 69.7158549576.

The spelling of 338840 in words is "three hundred thirty-eight thousand, eight hundred forty".