2800

2800 is a natural number that follows 2799 and precedes 2801. It is an even, composite number used in arithmetic, measurement, and as an example in number theory.

Prime factorization: 2800 = 2^4 × 5^2 × 7. The number has 30 positive divisors, computed as (4+1)(2+1)(1+1). The sum of its divisors, including itself, is 7688, so the sum of proper divisors is 4888, making 2800 an abundant number. It is also a Harshad number in base 10 because the digit sum is 2+8+0+0 = 10 and 2800 ÷ 10 = 280.

Representations in common bases include: binary 101011110000, octal 5360, hexadecimal AF0, and Roman numerals MMDCCC. In decimal form it is written as 2800. It is divisible by 4, 8, 16, 25, and 100, reflecting its factorization.

In mathematical education, 2800 is used as an example for teaching divisors, base conversions, and properties of abundant numbers. Because it is a multiple of 100, it may appear in contexts involving rounded financial figures or scale measurements.