8406216 has 96 divisors (see below), whose sum is σ = 28042560. Its totient is φ = 2215296.

The previous prime is 8406193. The next prime is 8406221. The reversal of 8406216 is 6126048.

It is a self number, because there is not a number n which added to its sum of digits gives 8406216.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5911 + ... + 7193.

It is an arithmetic number, because the mean of its divisors is an integer number (292110).

Almost surely, 2^8406216 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 8406216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14021280).

8406216 is an abundant number, since it is smaller than the sum of its proper divisors (19636344).

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

8406216 is a wasteful number, since it uses less digits than its factorization.

8406216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315 (or 1308 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8406216 is about 2899.3475128035. The cubic root of 8406216 is about 203.3294012199.

It can be divided in two parts, 840 and 6216, that added together give a square (7056 = 84²).

The spelling of 8406216 in words is "eight million, four hundred six thousand, two hundred sixteen".