720_(number)
720 (number)
Natural number
720 (seven hundred [and] twenty) is the natural number following 719 and preceding 721.
It is 6! (6 factorial) and a composite number with 30 divisors, more than any number below, making it a highly composite number.[1] It is a Harshad number in every base from binary to decimal.
720 is expressible as the product of consecutive integers in two different ways: 720 = 1 × 2 × 3 × 4 × 5 × 6 and 720 = 8 × 9 × 10. [2]
There are 49 solutions to the equation φ(x) = 720, more than any integer below it, making 720 a highly totient number.
720 is a 241-gonal number.