63888138 has 12 divisors (see below), whose sum is σ = 138424338. Its totient is φ = 21296040.

The previous prime is 63888137. The next prime is 63888191. The reversal of 63888138 is 83188836.

63888138 is a `hidden beast` number, since 638 + 8 + 8 + 1 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39652209 + 24235929 = 6297^2 + 4923^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 63888093 and 63888102.

It is not an unprimeable number, because it can be changed into a prime (63888137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1774653 + ... + 1774688.

Almost surely, 2^63888138 is an apocalyptic number.

63888138 is an abundant number, since it is smaller than the sum of its proper divisors (74536200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63888138 is a wasteful number, since it uses less digits than its factorization.

63888138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3549349 (or 3549346 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 63888138 is about 7993.0055673695. The cubic root of 63888138 is about 399.7668182588.

The spelling of 63888138 in words is "sixty-three million, eight hundred eighty-eight thousand, one hundred thirty-eight".