8278424 has 64 divisors (see below), whose sum is σ = 19699200. Its totient is φ = 3168000.

The previous prime is 8278421. The next prime is 8278477. The reversal of 8278424 is 4248728.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8278421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54749 + ... + 54899.

It is an arithmetic number, because the mean of its divisors is an integer number (307800).

Almost surely, 2^8278424 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 8278424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9849600).

8278424 is an abundant number, since it is smaller than the sum of its proper divisors (11420776).

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

8278424 is a wasteful number, since it uses less digits than its factorization.

8278424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 260 counting only the distinct ones).

The product of its digits is 28672, while the sum is 35.

The square root of 8278424 is about 2877.2250520250. The cubic root of 8278424 is about 202.2937920180.

The spelling of 8278424 in words is "eight million, two hundred seventy-eight thousand, four hundred twenty-four".