8216340 has 96 divisors (see below), whose sum is σ = 25643520. Its totient is φ = 1948800.

The previous prime is 8216317. The next prime is 8216347. The reversal of 8216340 is 436128.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8216340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8216347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38835 + ... + 39045.

It is an arithmetic number, because the mean of its divisors is an integer number (267120).

Almost surely, 2^8216340 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 8216340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12821760).

8216340 is an abundant number, since it is smaller than the sum of its proper divisors (17427180).

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

8216340 is a wasteful number, since it uses less digits than its factorization.

8216340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 8216340 is about 2866.4158805030. The cubic root of 8216340 is about 201.7868221264.

The spelling of 8216340 in words is "eight million, two hundred sixteen thousand, three hundred forty".