Number 2821 - properties and curiosities

2821 (number)

2821

Number 2821 properties

  • Harshad
  • 2821 is an odd number.
  • 2821 is a Harshad number, which means it is divisible by the sum of its digits (2821 = 13, and 2821 is divisible by 13).

Prime factorization

Prime factorization of 2821: 7 × 13 × 31.

Divisors

Divisor count: 8

1, 7, 13, 31, 91, 217, 403, 2821

Factors of 2821 are: 1, 7, 13, 31, 91, 217, 403, 2821.

Representations

In octal, 2821 is represented as 5405.

In binary, 2821 is represented as 101100000101.

In hex, 2821 is represented as B05.

Roman numeral: MMDCCCXXI

Curiosities

  • 2821 is divisible by the sum of its digits.

Quick answers

Is 2821 prime?
No, 2821 is not prime.

What are the factors of 2821?
1, 7, 13, 31, 91, 217, 403, 2821

What is 2821 in binary?
101100000101