63868928 has 52 divisors (see below), whose sum is σ = 132104448. Its totient is φ = 30842880.

The previous prime is 63868921. The next prime is 63868951. The reversal of 63868928 is 82986836.

It is not an unprimeable number, because it can be changed into a prime (63868921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126725 + ... + 127227.

Almost surely, 2^63868928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63868928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66052224).

63868928 is an abundant number, since it is smaller than the sum of its proper divisors (68235520).

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

63868928 is an equidigital number, since it uses as much as digits as its factorization.

63868928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 536 counting only the distinct ones).

The product of its digits is 995328, while the sum is 50.

The square root of 63868928 is about 7991.8038013955. The cubic root of 63868928 is about 399.7267467074.

The spelling of 63868928 in words is "sixty-three million, eight hundred sixty-eight thousand, nine hundred twenty-eight".