78195 has 16 divisors (see below), whose sum is σ = 135072. Its totient is φ = 38400.

The previous prime is 78193. The next prime is 78203. The reversal of 78195 is 59187.

It is not a de Polignac number, because 78195 - 2¹ = 78193 is a prime.

It is a super-2 number, since 2×78195² = 12228916050, which contains 22 as substring.

78195 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6 + ... + 395.

It is an arithmetic number, because the mean of its divisors is an integer number (8442).

2⁷⁸¹⁹⁵ is an apocalyptic number.

78195 is a deficient number, since it is larger than the sum of its proper divisors (56877).

78195 is a wasteful number, since it uses less digits than its factorization.

78195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422.

The product of its digits is 2520, while the sum is 30.

The square root of 78195 is about 279.6336889575. The cubic root of 78195 is about 42.7621626759.

The spelling of 78195 in words is "seventy-eight thousand, one hundred ninety-five".