447728013 has 16 divisors (see below), whose sum is σ = 686174400. Its totient is φ = 288192240.

The previous prime is 447728011. The next prime is 447728087. The reversal of 447728013 is 310827744.

It is a happy number.

It is not a de Polignac number, because 447728013 - 2¹ = 447728011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447728011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 285123 + ... + 286688.

It is an arithmetic number, because the mean of its divisors is an integer number (42885900).

Almost surely, 2^447728013 is an apocalyptic number.

It is an amenable number.

447728013 is a deficient number, since it is larger than the sum of its proper divisors (238446387).

447728013 is a wasteful number, since it uses less digits than its factorization.

447728013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571849 (or 571843 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 447728013 is about 21159.5844240855. The cubic root of 447728013 is about 765.0175928288.

The spelling of 447728013 in words is "four hundred forty-seven million, seven hundred twenty-eight thousand, thirteen".