63623728 has 20 divisors (see below), whose sum is σ = 140881360. Its totient is φ = 27267264.

The previous prime is 63623701. The next prime is 63623743. The reversal of 63623728 is 82732636.

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, 283923 + ... + 284146.

It is an arithmetic number, because the mean of its divisors is an integer number (7044068).

Almost surely, 2^63623728 is an apocalyptic number.

It is an amenable number.

63623728 is an abundant number, since it is smaller than the sum of its proper divisors (77257632).

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

63623728 is a wasteful number, since it uses less digits than its factorization.

63623728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568084 (or 568078 counting only the distinct ones).

The product of its digits is 72576, while the sum is 37.

The square root of 63623728 is about 7976.4483324347. The cubic root of 63623728 is about 399.2145587145.

The spelling of 63623728 in words is "sixty-three million, six hundred twenty-three thousand, seven hundred twenty-eight".