2820206 has 4 divisors (see below), whose sum is σ = 4230312. Its totient is φ = 1410102.

The previous prime is 2820197. The next prime is 2820211. The reversal of 2820206 is 6020282.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 705050 + ... + 705053.

It is an arithmetic number, because the mean of its divisors is an integer number (1057578).

2^2820206 is an apocalyptic number.

2820206 is a deficient number, since it is larger than the sum of its proper divisors (1410106).

2820206 is a wasteful number, since it uses less digits than its factorization.

2820206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410105.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2820206 is about 1679.3468968620. The cubic root of 2820206 is about 141.2842045236.

Adding to 2820206 its reverse (6020282), we get a palindrome (8840488).

The spelling of 2820206 in words is "two million, eight hundred twenty thousand, two hundred six".