78382 has 4 divisors (see below), whose sum is σ = 117576. Its totient is φ = 39190.

The previous prime is 78367. The next prime is 78401. The reversal of 78382 is 28387.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×78382² = 12287475848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78382.

It is a congruent number.

It is an unprimeable number.

78382 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 as a sum of consecutive naturals, namely, 19594 + ... + 19597.

It is an arithmetic number, because the mean of its divisors is an integer number (29394).

2⁷⁸³⁸² is an apocalyptic number.

78382 is a deficient number, since it is larger than the sum of its proper divisors (39194).

78382 is a wasteful number, since it uses less digits than its factorization.

78382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39193.

The product of its digits is 2688, while the sum is 28.

The square root of 78382 is about 279.9678552977. The cubic root of 78382 is about 42.7962235000.

The spelling of 78382 in words is "seventy-eight thousand, three hundred eighty-two".