8140216 has 16 divisors (see below), whose sum is σ = 17443440. Its totient is φ = 3488640.

The previous prime is 8140211. The next prime is 8140247. The reversal of 8140216 is 6120418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8140211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72625 + ... + 72736.

It is an arithmetic number, because the mean of its divisors is an integer number (1090215).

Almost surely, 2^8140216 is an apocalyptic number.

It is an amenable number.

8140216 is an abundant number, since it is smaller than the sum of its proper divisors (9303224).

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

8140216 is a wasteful number, since it uses less digits than its factorization.

8140216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145374 (or 145370 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 8140216 is about 2853.1063772667. The cubic root of 8140216 is about 201.1617057999.

It can be divided in two parts, 81402 and 16, that added together give a palindrome (81418).

The spelling of 8140216 in words is "eight million, one hundred forty thousand, two hundred sixteen".