63628940 has 12 divisors (see below), whose sum is σ = 133620816. Its totient is φ = 25451568.

The previous prime is 63628933. The next prime is 63628969. The reversal of 63628940 is 4982636.

It is a junction number, because it is equal to n+sod(n) for n = 63628894 and 63628903.

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, 1590704 + ... + 1590743.

It is an arithmetic number, because the mean of its divisors is an integer number (11135068).

Almost surely, 2^63628940 is an apocalyptic number.

It is an amenable number.

63628940 is an abundant number, since it is smaller than the sum of its proper divisors (69991876).

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

63628940 is a wasteful number, since it uses less digits than its factorization.

63628940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3181456 (or 3181454 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 63628940 is about 7976.7750375700. The cubic root of 63628940 is about 399.2254595190.

The spelling of 63628940 in words is "sixty-three million, six hundred twenty-eight thousand, nine hundred forty".