63381928 has 32 divisors (see below), whose sum is σ = 126063360. Its totient is φ = 29810880.

The previous prime is 63381911. The next prime is 63381943. The reversal of 63381928 is 82918336.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8401 + ... + 14047.

It is an arithmetic number, because the mean of its divisors is an integer number (3939480).

Almost surely, 2^63381928 is an apocalyptic number.

It is an amenable number.

63381928 is a deficient number, since it is larger than the sum of its proper divisors (62681432).

63381928 is a wasteful number, since it uses less digits than its factorization.

63381928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737 (or 5733 counting only the distinct ones).

The product of its digits is 62208, while the sum is 40.

The square root of 63381928 is about 7961.2767820244. The cubic root of 63381928 is about 398.7081825101.

The spelling of 63381928 in words is "sixty-three million, three hundred eighty-one thousand, nine hundred twenty-eight".