8478540 has 96 divisors (see below), whose sum is σ = 30159360. Its totient is φ = 1937088.

The previous prime is 8478539. The next prime is 8478551. The reversal of 8478540 is 458748.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 8478495 and 8478504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2659 + ... + 4901.

It is an arithmetic number, because the mean of its divisors is an integer number (314160).

Almost surely, 2^8478540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8478540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15079680).

8478540 is an abundant number, since it is smaller than the sum of its proper divisors (21680820).

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

8478540 is a wasteful number, since it uses less digits than its factorization.

8478540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 8478540 is about 2911.7932618921. The cubic root of 8478540 is about 203.9108607096.

The spelling of 8478540 in words is "eight million, four hundred seventy-eight thousand, five hundred forty".