8212638 has 16 divisors (see below), whose sum is σ = 18771840. Its totient is φ = 2346456.

The previous prime is 8212637. The next prime is 8212661. The reversal of 8212638 is 8362128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8212637) 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, 97728 + ... + 97811.

It is an arithmetic number, because the mean of its divisors is an integer number (1173240).

Almost surely, 2^8212638 is an apocalyptic number.

8212638 is an abundant number, since it is smaller than the sum of its proper divisors (10559202).

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

8212638 is a wasteful number, since it uses less digits than its factorization.

8212638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195551.

The product of its digits is 4608, while the sum is 30.

The square root of 8212638 is about 2865.7700535807. The cubic root of 8212638 is about 201.7565115081.

It can be divided in two parts, 82 and 12638, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 8212638 in words is "eight million, two hundred twelve thousand, six hundred thirty-eight".