78146 has 8 divisors (see below), whose sum is σ = 120204. Its totient is φ = 38080.

The previous prime is 78139. The next prime is 78157. The reversal of 78146 is 64187.

It can be written as a sum of positive squares in 2 ways, for example, as 70225 + 7921 = 265^2 + 89^2 .

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

It is a super-2 number, since 2×78146² = 12213594632, which contains 22 as substring.

It is an unprimeable number.

78146 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, 395 + ... + 558.

2⁷⁸¹⁴⁶ is an apocalyptic number.

78146 is a deficient number, since it is larger than the sum of its proper divisors (42058).

78146 is a wasteful number, since it uses less digits than its factorization.

78146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996.

The product of its digits is 1344, while the sum is 26.

The square root of 78146 is about 279.5460606054. The cubic root of 78146 is about 42.7532286699.

The spelling of 78146 in words is "seventy-eight thousand, one hundred forty-six".