2820212 has 6 divisors (see below), whose sum is σ = 4935378. Its totient is φ = 1410104.

The previous prime is 2820211. The next prime is 2820229. The reversal of 2820212 is 2120282.

It can be written as a sum of positive squares in only one way, i.e., 2808976 + 11236 = 1676^2 + 106^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2820211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 352523 + ... + 352530.

It is an arithmetic number, because the mean of its divisors is an integer number (822563).

2^2820212 is an apocalyptic number.

It is an amenable number.

2820212 is a deficient number, since it is larger than the sum of its proper divisors (2115166).

2820212 is a wasteful number, since it uses less digits than its factorization.

2820212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705057 (or 705055 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 2820212 is about 1679.3486832698. The cubic root of 2820212 is about 141.2843047177.

Adding to 2820212 its reverse (2120282), we get a palindrome (4940494).

The spelling of 2820212 in words is "two million, eight hundred twenty thousand, two hundred twelve".