27990

27990 is a six-digit number. In Roman numerals, it would be represented as XXVII CMXCIX. It is an even number, as its last digit is 0. The sum of its digits is 2 + 7 + 9 + 9 + 0 = 27. 27990 is divisible by 2, 5, and 10, due to its ending digit. It is also divisible by 3 and 9, as the sum of its digits (27) is divisible by both 3 and 9. Dividing 27990 by 3 results in 9330, and dividing by 9 results in 3110. Further prime factorization of 27990 reveals it to be 2 x 3^2 x 5 x 311. The number 311 is a prime number. The number 27990 falls between 27989 and 27991. In scientific notation, it can be expressed as 2.799 x 10^4.