3820212 has 54 divisors (see below), whose sum is σ = 10626434. Its totient is φ = 1156320.

The previous prime is 3820181. The next prime is 3820237. The reversal of 3820212 is 2120283.

It is a happy number.

3820212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3663396 + 156816 = 1914^2 + 396^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 3918 + ... + 4794.

Almost surely, 2^3820212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3820212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5313217).

3820212 is an abundant number, since it is smaller than the sum of its proper divisors (6806222).

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

3820212 is a wasteful number, since it uses less digits than its factorization.

3820212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 3820212 is about 1954.5362621348. The cubic root of 3820212 is about 156.3252582525.

Adding to 3820212 its reverse (2120283), we get a palindrome (5940495).

The spelling of 3820212 in words is "three million, eight hundred twenty thousand, two hundred twelve".