8478342 has 48 divisors (see below), whose sum is σ = 19712160. Its totient is φ = 2624256.

The previous prime is 8478319. The next prime is 8478361. The reversal of 8478342 is 2438748.

It is a junction number, because it is equal to n+sod(n) for n = 8478297 and 8478306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31384 + ... + 31652.

It is an arithmetic number, because the mean of its divisors is an integer number (410670).

Almost surely, 2^8478342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8478342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9856080).

8478342 is an abundant number, since it is smaller than the sum of its proper divisors (11233818).

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

8478342 is a wasteful number, since it uses less digits than its factorization.

8478342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397 (or 394 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 8478342 is about 2911.7592620270. The cubic root of 8478342 is about 203.9092733819.

The spelling of 8478342 in words is "eight million, four hundred seventy-eight thousand, three hundred forty-two".