63780128 has 24 divisors (see below), whose sum is σ = 128241792. Its totient is φ = 31210816.

The previous prime is 63780109. The next prime is 63780161. The reversal of 63780128 is 82108736.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19700 + ... + 22707.

It is an arithmetic number, because the mean of its divisors is an integer number (5343408).

Almost surely, 2^63780128 is an apocalyptic number.

It is an amenable number.

63780128 is an abundant number, since it is smaller than the sum of its proper divisors (64461664).

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

63780128 is a wasteful number, since it uses less digits than its factorization.

63780128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42464 (or 42456 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 63780128 is about 7986.2461770221. The cubic root of 63780128 is about 399.5414077672.

The spelling of 63780128 in words is "sixty-three million, seven hundred eighty thousand, one hundred twenty-eight".