2820266 has 16 divisors (see below), whose sum is σ = 4526280. Its totient is φ = 1313280.

The previous prime is 2820263. The next prime is 2820271. The reversal of 2820266 is 6620282.

It can be written as a sum of positive squares in 4 ways, for example, as 2146225 + 674041 = 1465^2 + 821^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2820263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3326 + ... + 4086.

2^2820266 is an apocalyptic number.

2820266 is a deficient number, since it is larger than the sum of its proper divisors (1706014).

2820266 is a wasteful number, since it uses less digits than its factorization.

2820266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 2820266 is about 1679.3647608545. The cubic root of 2820266 is about 141.2852064589.

The spelling of 2820266 in words is "two million, eight hundred twenty thousand, two hundred sixty-six".