63128871 has 36 divisors (see below), whose sum is σ = 104372632. Its totient is φ = 36543744.

The previous prime is 63128851. The next prime is 63128873. The reversal of 63128871 is 17882136.

63128871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 63128871 - 2¹⁴ = 63112487 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63128873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32880 + ... + 34746.

Almost surely, 2^63128871 is an apocalyptic number.

63128871 is a deficient number, since it is larger than the sum of its proper divisors (41243761).

63128871 is a wasteful number, since it uses less digits than its factorization.

63128871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1920 (or 1900 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 63128871 is about 7945.3678958246. The cubic root of 63128871 is about 398.1768508595.

The spelling of 63128871 in words is "sixty-three million, one hundred twenty-eight thousand, eight hundred seventy-one".