8218912 has 48 divisors (see below), whose sum is σ = 18204480. Its totient is φ = 3624192.

The previous prime is 8218897. The next prime is 8218913. The reversal of 8218912 is 2198128.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8218913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9139 + ... + 9997.

It is an arithmetic number, because the mean of its divisors is an integer number (379260).

Almost surely, 2^8218912 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 8218912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9102240).

8218912 is an abundant number, since it is smaller than the sum of its proper divisors (9985568).

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

8218912 is a wasteful number, since it uses less digits than its factorization.

8218912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 897 counting only the distinct ones).

The product of its digits is 2304, while the sum is 31.

The square root of 8218912 is about 2866.8644892984. The cubic root of 8218912 is about 201.8078753594.

The spelling of 8218912 in words is "eight million, two hundred eighteen thousand, nine hundred twelve".