78322 has 4 divisors (see below), whose sum is σ = 117486.
Its totient is φ = 39160.
The previous prime is 78317. The next prime is 78341. The reversal of 78322 is 22387.
It can be divided in two parts, 78 and 322, that added together give a square (400 = 202).
It is a happy number.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22387 = 61 ⋅367.
It can be written as a sum of positive squares in only one way, i.e., 68121 + 10201 = 261^2 + 101^2
It is a super-2 number, since 2×783222 = 12268671368, which contains 22 as substring.
It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a junction number, because it is equal to n+sod(n) for n = 78293 and 78302.
It is an unprimeable number.
78322 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, 19579 + ... + 19582.
278322 is an apocalyptic number.
78322 is a deficient number, since it is larger than the sum of its proper divisors (39164).
78322 is a wasteful number, since it uses less digits than its factorization.
78322 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 39163.
The product of its digits is 672, while the sum is 22.
The square root of 78322 is about 279.8606796247.
The cubic root of 78322 is about 42.7853008014.
The spelling of 78322 in words is "seventy-eight thousand, three hundred twenty-two".