2821263 has 4 divisors (see below), whose sum is σ = 3761688. Its totient is φ = 1880840.

The previous prime is 2821229. The next prime is 2821267. The reversal of 2821263 is 3621282.

2821263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2821263 - 2⁹ = 2820751 is a prime.

It is a super-3 number, since 3×2821263³ = 67367739422233315341, which contains 333 as substring.

It is a D-number.

It is a congruent number.

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

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 3 ways as a sum of consecutive naturals, for example, 470208 + ... + 470213.

It is an arithmetic number, because the mean of its divisors is an integer number (940422).

2^2821263 is an apocalyptic number.

2821263 is a deficient number, since it is larger than the sum of its proper divisors (940425).

2821263 is an equidigital number, since it uses as much as digits as its factorization.

2821263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940424.

The product of its digits is 1152, while the sum is 24.

The square root of 2821263 is about 1679.6615730557. The cubic root of 2821263 is about 141.3018532049.

The spelling of 2821263 in words is "two million, eight hundred twenty-one thousand, two hundred sixty-three".