382840 has 32 divisors (see below), whose sum is σ = 913680. Its totient is φ = 143872.

The previous prime is 382813. The next prime is 382843. The reversal of 382840 is 48283.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 399 + ... + 961.

2³⁸²⁸⁴⁰ 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 382840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456840).

382840 is an abundant number, since it is smaller than the sum of its proper divisors (530840).

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

382840 is a wasteful number, since it uses less digits than its factorization.

382840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 587 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 382840 is about 618.7406564951. The cubic root of 382840 is about 72.6115603121.

The spelling of 382840 in words is "three hundred eighty-two thousand, eight hundred forty".