8427216 has 60 divisors (see below), whose sum is σ = 25331712. Its totient is φ = 2407104.

The previous prime is 8427191. The next prime is 8427217. The reversal of 8427216 is 6127248.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8427217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561 + ... + 4143.

Almost surely, 2^8427216 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 8427216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12665856).

8427216 is an abundant number, since it is smaller than the sum of its proper divisors (16904496).

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

8427216 is a wasteful number, since it uses less digits than its factorization.

8427216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3608 (or 3595 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 8427216 is about 2902.9667583353. The cubic root of 8427216 is about 203.4985762970.

Subtracting from 8427216 its reverse (6127248), we obtain a cube (2299968 = 132³).

It can be divided in two parts, 84 and 27216, that multiplied together give a square (2286144 = 1512²).

The spelling of 8427216 in words is "eight million, four hundred twenty-seven thousand, two hundred sixteen".