8228215 has 4 divisors (see below), whose sum is σ = 9873864. Its totient is φ = 6582568.

The previous prime is 8228201. The next prime is 8228263. The reversal of 8228215 is 5128228.

8228215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8228215 - 2⁵ = 8228183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822817 + ... + 822826.

It is an arithmetic number, because the mean of its divisors is an integer number (2468466).

Almost surely, 2^8228215 is an apocalyptic number.

8228215 is a deficient number, since it is larger than the sum of its proper divisors (1645649).

8228215 is a wasteful number, since it uses less digits than its factorization.

8228215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645648.

The product of its digits is 2560, while the sum is 28.

The square root of 8228215 is about 2868.4865347427. The cubic root of 8228215 is about 201.8839888709.

The spelling of 8228215 in words is "eight million, two hundred twenty-eight thousand, two hundred fifteen".