8420304 has 60 divisors (see below), whose sum is σ = 23145344. Its totient is φ = 2637312.

The previous prime is 8420281. The next prime is 8420311. The reversal of 8420304 is 4030248.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13569 + ... + 14175.

Almost surely, 2^8420304 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 8420304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11572672).

8420304 is an abundant number, since it is smaller than the sum of its proper divisors (14725040).

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

8420304 is a wasteful number, since it uses less digits than its factorization.

8420304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 8420304 is about 2901.7760078959. The cubic root of 8420304 is about 203.4429245889.

The spelling of 8420304 in words is "eight million, four hundred twenty thousand, three hundred four".