78258 has 8 divisors (see below), whose sum is σ = 156528. Its totient is φ = 26084.

The previous prime is 78241. The next prime is 78259. The reversal of 78258 is 85287.

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

78258 is an admirable number.

It is a super-2 number, since 2×78258² = 12248629128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78259) by changing a digit.

78258 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, 6516 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (19566).

2⁷⁸²⁵⁸ is an apocalyptic number.

78258 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78264).

78258 is a wasteful number, since it uses less digits than its factorization.

78258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13048.

The product of its digits is 4480, while the sum is 30.

The square root of 78258 is about 279.7463136486. The cubic root of 78258 is about 42.7736437726.

The spelling of 78258 in words is "seventy-eight thousand, two hundred fifty-eight".