19963628 has 12 divisors (see below), whose sum is σ = 36063552. Its totient is φ = 9659760.

The previous prime is 19963621. The next prime is 19963637. The reversal of 19963628 is 82636991.

It is not an unprimeable number, because it can be changed into a prime (19963621) 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 3 ways as a sum of consecutive naturals, for example, 80375 + ... + 80622.

It is an arithmetic number, because the mean of its divisors is an integer number (3005296).

Almost surely, 2^19963628 is an apocalyptic number.

It is an amenable number.

19963628 is a deficient number, since it is larger than the sum of its proper divisors (16099924).

19963628 is a wasteful number, since it uses less digits than its factorization.

19963628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161032 (or 161030 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 19963628 is about 4468.0675912524. The cubic root of 19963628 is about 271.2771138137.

The spelling of 19963628 in words is "nineteen million, nine hundred sixty-three thousand, six hundred twenty-eight".