85278 has 16 divisors (see below), whose sum is σ = 174096. Its totient is φ = 27840.

The previous prime is 85259. The next prime is 85297. The reversal of 85278 is 87258.

It is an interprime number because it is at equal distance from previous prime (85259) and next prime (85297).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

85278 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 7 ways as a sum of consecutive naturals, for example, 250 + ... + 482.

It is an arithmetic number, because the mean of its divisors is an integer number (10881).

2⁸⁵²⁷⁸ is an apocalyptic number.

85278 is an abundant number, since it is smaller than the sum of its proper divisors (88818).

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 (87048).

85278 is a wasteful number, since it uses less digits than its factorization.

85278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299.

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

The square root of 85278 is about 292.0239716188. The cubic root of 85278 is about 44.0161786235.

It can be divided in two parts, 85 and 278, that added together give a palindrome (363).

The spelling of 85278 in words is "eighty-five thousand, two hundred seventy-eight".