8428216 has 16 divisors (see below), whose sum is σ = 15909840. Its totient is φ = 4185600.

The previous prime is 8428213. The next prime is 8428237. The reversal of 8428216 is 6128248.

8428216 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2281 + ... + 4696.

It is an arithmetic number, because the mean of its divisors is an integer number (994365).

Almost surely, 2^8428216 is an apocalyptic number.

It is an amenable number.

8428216 is a deficient number, since it is larger than the sum of its proper divisors (7481624).

8428216 is a wasteful number, since it uses less digits than its factorization.

8428216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7134 (or 7130 counting only the distinct ones).

The product of its digits is 6144, while the sum is 31.

The square root of 8428216 is about 2903.1389908167. The cubic root of 8428216 is about 203.5066252393.

Subtracting from 8428216 its reverse (6128248), we obtain a cube (2299968 = 132³).

The spelling of 8428216 in words is "eight million, four hundred twenty-eight thousand, two hundred sixteen".