8378478 has 20 divisors (see below), whose sum is σ = 18774360. Its totient is φ = 2792772.

The previous prime is 8378437. The next prime is 8378479. The reversal of 8378478 is 8748738.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8378479) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25698 + ... + 26021.

It is an arithmetic number, because the mean of its divisors is an integer number (938718).

Almost surely, 2^8378478 is an apocalyptic number.

8378478 is an abundant number, since it is smaller than the sum of its proper divisors (10395882).

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

8378478 is a wasteful number, since it uses less digits than its factorization.

8378478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51733 (or 51724 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 8378478 is about 2894.5600702007. The cubic root of 8378478 is about 203.1055127025.

The spelling of 8378478 in words is "eight million, three hundred seventy-eight thousand, four hundred seventy-eight".