8421304 has 8 divisors (see below), whose sum is σ = 15789960. Its totient is φ = 4210648.

The previous prime is 8421251. The next prime is 8421403. The reversal of 8421304 is 4031248.

8421304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×8421304² = 141836722120832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 526324 + ... + 526339.

It is an arithmetic number, because the mean of its divisors is an integer number (1973745).

Almost surely, 2^8421304 is an apocalyptic number.

It is an amenable number.

8421304 is a deficient number, since it is larger than the sum of its proper divisors (7368656).

8421304 is a wasteful number, since it uses less digits than its factorization.

8421304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052669 (or 1052665 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 8421304 is about 2901.9483110490. The cubic root of 8421304 is about 203.4509779352.

The spelling of 8421304 in words is "eight million, four hundred twenty-one thousand, three hundred four".