8138212 has 12 divisors (see below), whose sum is σ = 14733180. Its totient is φ = 3928736.

The previous prime is 8138209. The next prime is 8138219. The reversal of 8138212 is 2128318.

It can be written as a sum of positive squares in 2 ways, for example, as 2643876 + 5494336 = 1626^2 + 2344^2 .

It is not an unprimeable number, because it can be changed into a prime (8138219) 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, 34963 + ... + 35194.

It is an arithmetic number, because the mean of its divisors is an integer number (1227765).

Almost surely, 2^8138212 is an apocalyptic number.

It is an amenable number.

8138212 is a deficient number, since it is larger than the sum of its proper divisors (6594968).

8138212 is a wasteful number, since it uses less digits than its factorization.

8138212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70190 (or 70188 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 8138212 is about 2852.7551594906. The cubic root of 8138212 is about 201.1451967726.

It can be divided in two parts, 813 and 8212, that added together give a square (9025 = 95²).

The spelling of 8138212 in words is "eight million, one hundred thirty-eight thousand, two hundred twelve".