2822643 has 24 divisors (see below), whose sum is σ = 4299776. Its totient is φ = 1782000.

The previous prime is 2822641. The next prime is 2822669. The reversal of 2822643 is 3462282.

It is not a de Polignac number, because 2822643 - 2¹ = 2822641 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 2¹³ + 8⁴ + 2¹⁶ + 2²⁰ + 6⁸ + 4⁷ + 3⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2822641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18618 + ... + 18768.

2^2822643 is an apocalyptic number.

2822643 is a deficient number, since it is larger than the sum of its proper divisors (1477133).

2822643 is a wasteful number, since it uses less digits than its factorization.

2822643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 252 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 2822643 is about 1680.0723198720. The cubic root of 2822643 is about 141.3248883695.

The spelling of 2822643 in words is "two million, eight hundred twenty-two thousand, six hundred forty-three".