Number of the day: 672028146

Properties of the number 672028146:

672028146 = 2 × 3² × 37334897 is the 637149995^th composite number and is not squarefree.
672028146 has 3 distinct prime factors, 12 divisors, 7 antidivisors and 224009376 totatives.
672028146 has a triangular digit sum 36 in base 10.
672028146 is the sum of 2 positive triangular numbers.
672028146 is the difference of 2 positive pentagonal numbers in 2 ways.
672028146 = 4875² + 25461² is the sum of 2 positive squares in 1 way.
672028146 = 929² + 1324² + 25873² is the sum of 3 positive squares.
672028146² = 248244750² + 624496896² is the sum of 2 positive squares in 1 way.
672028146² is the sum of 3 positive squares.
672028146 is a proper divisor of 1789²⁶⁴¹⁶² - 1.
672028146 = '67202' + '8146' is the concatenation of 2 semiprime numbers.