8128212 has 24 divisors (see below), whose sum is σ = 19164096. Its totient is φ = 2681088.

The previous prime is 8128187. The next prime is 8128213. The reversal of 8128212 is 2128218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2328 + ... + 4655.

It is an arithmetic number, because the mean of its divisors is an integer number (798504).

Almost surely, 2^8128212 is an apocalyptic number.

8128212 is the 2328-th pentagonal number.

It is an amenable number.

8128212 is an abundant number, since it is smaller than the sum of its proper divisors (11035884).

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

8128212 is a wasteful number, since it uses less digits than its factorization.

8128212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7087 (or 7085 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 8128212 is about 2851.0019291470. The cubic root of 8128212 is about 201.0627758673.

The spelling of 8128212 in words is "eight million, one hundred twenty-eight thousand, two hundred twelve".