28721

28721 is a five-digit integer. It falls between the integers 28720 and 28722. In Roman numerals, it would be represented as XXVIIIDCCXXI. The sum of its digits is 2 + 8 + 7 + 2 + 1 = 20.

In terms of prime factorization, 28721 is a prime number. This means its only divisors are 1 and itself. It cannot be evenly divided by any smaller prime numbers such as 2, 3, 5, 7, 11, 13, etc.

The number 28721 can be expressed in scientific notation as 2.8721 x 10^4. In binary representation, it is 11100000110001.

Further mathematical properties or occurrences of this specific integer in notable sequences or constants are not widely documented in common mathematical literature. Its significance is primarily as a member of the sequence of natural numbers.