63428517 has 48 divisors (see below), whose sum is σ = 100900800. Its totient is φ = 38257920.

The previous prime is 63428509. The next prime is 63428527. The reversal of 63428517 is 71582436.

63428517 is a `hidden beast` number, since 634 + 2 + 8 + 5 + 17 = 666.

It is not a de Polignac number, because 63428517 - 2³ = 63428509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63428527) 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 47 ways as a sum of consecutive naturals, for example, 581859 + ... + 581967.

It is an arithmetic number, because the mean of its divisors is an integer number (2102100).

Almost surely, 2^63428517 is an apocalyptic number.

It is an amenable number.

63428517 is a deficient number, since it is larger than the sum of its proper divisors (37472283).

63428517 is a wasteful number, since it uses less digits than its factorization.

63428517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 255 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 63428517 is about 7964.2022199339. The cubic root of 63428517 is about 398.8058489726.

The spelling of 63428517 in words is "sixty-three million, four hundred twenty-eight thousand, five hundred seventeen".