382665820 has 24 divisors (see below), whose sum is σ = 804281184. Its totient is φ = 152936256.

The previous prime is 382665779. The next prime is 382665827. The reversal of 382665820 is 28566283.

382665820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382665827) 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, 18049 + ... + 33031.

It is an arithmetic number, because the mean of its divisors is an integer number (33511716).

Almost surely, 2^382665820 is an apocalyptic number.

It is an amenable number.

382665820 is an abundant number, since it is smaller than the sum of its proper divisors (421615364).

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

382665820 is a wasteful number, since it uses less digits than its factorization.

382665820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16269 (or 16267 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 382665820 is about 19561.8460274075. The cubic root of 382665820 is about 726.0054665962.

The spelling of 382665820 in words is "three hundred eighty-two million, six hundred sixty-five thousand, eight hundred twenty".