8212916 has 24 divisors (see below), whose sum is σ = 15036840. Its totient is φ = 3920000.

The previous prime is 8212913. The next prime is 8212931. The reversal of 8212916 is 6192128.

It can be written as a sum of positive squares in 4 ways, for example, as 5044516 + 3168400 = 2246^2 + 1780^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212913) 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 7 ways as a sum of consecutive naturals, for example, 11366 + ... + 12066.

It is an arithmetic number, because the mean of its divisors is an integer number (626535).

Almost surely, 2^8212916 is an apocalyptic number.

It is an amenable number.

8212916 is a deficient number, since it is larger than the sum of its proper divisors (6823924).

8212916 is a wasteful number, since it uses less digits than its factorization.

8212916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835 (or 833 counting only the distinct ones).

The product of its digits is 1728, while the sum is 29.

The square root of 8212916 is about 2865.8185567129. The cubic root of 8212916 is about 201.7587879864.

The spelling of 8212916 in words is "eight million, two hundred twelve thousand, nine hundred sixteen".