478278 has 32 divisors (see below), whose sum is σ = 1127520. Its totient is φ = 149760.

The previous prime is 478273. The next prime is 478321. The reversal of 478278 is 872874.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478271) by changing a digit.

478278 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 15 ways as a sum of consecutive naturals, for example, 658 + ... + 1178.

It is an arithmetic number, because the mean of its divisors is an integer number (35235).

2⁴⁷⁸²⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 478278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563760).

478278 is an abundant number, since it is smaller than the sum of its proper divisors (649242).

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

478278 is a wasteful number, since it uses less digits than its factorization.

478278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 543 counting only the distinct ones).

The product of its digits is 25088, while the sum is 36.

The square root of 478278 is about 691.5764599811. The cubic root of 478278 is about 78.2036100487.

The spelling of 478278 in words is "four hundred seventy-eight thousand, two hundred seventy-eight".