63278320 has 40 divisors (see below), whose sum is σ = 168141024. Its totient is φ = 21695232.

The previous prime is 63278317. The next prime is 63278321. The reversal of 63278320 is 2387236.

63278320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63278321) 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 7 ways as a sum of consecutive naturals, for example, 55939 + ... + 57058.

Almost surely, 2^63278320 is an apocalyptic number.

It is an amenable number.

63278320 is an abundant number, since it is smaller than the sum of its proper divisors (104862704).

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

63278320 is a wasteful number, since it uses less digits than its factorization.

63278320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113017 (or 113011 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 63278320 is about 7954.7671241841. The cubic root of 63278320 is about 398.4908130481.

The spelling of 63278320 in words is "sixty-three million, two hundred seventy-eight thousand, three hundred twenty".