Number of the day: 21428007622

Properties of the number 21428007622:

21428007622 = 2 × 7² × 463 × 472253 is composite and not squarefree.
21428007622 has 4 distinct prime factors, 24 divisors, 27 antidivisors and 9163577808 totatives.
21428007622 has a semiprime digit sum 34 in base 10.
21428007622 has a Fibonacci digit sum 34 in base 10.
21428007622 is the difference of 2 positive pentagonal numbers in 12 ways.
21428007622 = 2021² + 2034² + 146355² is the sum of 3 positive squares.
21428007622² = 7249494728² + 20164432470² is the sum of 2 positive squares in 1 way.
21428007622² is the sum of 3 positive squares.
21428007622 is a proper divisor of 557⁷⁰⁸³⁷⁸ - 1.