382390 has 8 divisors (see below), whose sum is σ = 688320. Its totient is φ = 152952.

The previous prime is 382373. The next prime is 382391. The reversal of 382390 is 93283.

It is a happy number.

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

It is a super-2 number, since 2×382390² = 292444224200, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (382391) by changing a digit.

382390 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19110 + ... + 19129.

It is an arithmetic number, because the mean of its divisors is an integer number (86040).

2³⁸²³⁹⁰ is an apocalyptic number.

382390 is a deficient number, since it is larger than the sum of its proper divisors (305930).

382390 is a wasteful number, since it uses less digits than its factorization.

382390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38246.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 382390 is about 618.3769077189. The cubic root of 382390 is about 72.5830993250.

The spelling of 382390 in words is "three hundred eighty-two thousand, three hundred ninety".