8478 has 16 divisors (see below), whose sum is σ = 18960. Its totient is φ = 2808.

The previous prime is 8467. The next prime is 8501. The reversal of 8478 is 8748.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

8478 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, 25 + ... + 132.

It is an arithmetic number, because the mean of its divisors is an integer number (1185).

2⁸⁴⁷⁸ is an apocalyptic number.

8478 is an abundant number, since it is smaller than the sum of its proper divisors (10482).

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 (9480).

8478 is a wasteful number, since it uses less digits than its factorization.

8478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 162 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 8478 is about 92.0760555193. The cubic root of 8478 is about 20.3906531576.

It can be divided in two parts, 847 and 8, that multiplied together give a palindrome (6776).

The spelling of 8478 in words is "eight thousand, four hundred seventy-eight".