2821266 has 24 divisors (see below), whose sum is σ = 6986304. Its totient is φ = 806040.

The previous prime is 2821229. The next prime is 2821267. The reversal of 2821266 is 6621282.

It is not an unprimeable number, because it can be changed into a prime (2821267) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11070 + ... + 11321.

It is an arithmetic number, because the mean of its divisors is an integer number (291096).

2^2821266 is an apocalyptic number.

2821266 is an abundant number, since it is smaller than the sum of its proper divisors (4165038).

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

2821266 is a wasteful number, since it uses less digits than its factorization.

2821266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22406 (or 22403 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 2821266 is about 1679.6624660925. The cubic root of 2821266 is about 141.3019032895.

The spelling of 2821266 in words is "two million, eight hundred twenty-one thousand, two hundred sixty-six".