19996648 has 16 divisors (see below), whose sum is σ = 42850080. Its totient is φ = 8569968.

The previous prime is 19996621. The next prime is 19996649. The reversal of 19996648 is 84669991.

It is a junction number, because it is equal to n+sod(n) for n = 19996595 and 19996604.

It is not an unprimeable number, because it can be changed into a prime (19996649) 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, 178486 + ... + 178597.

It is an arithmetic number, because the mean of its divisors is an integer number (2678130).

Almost surely, 2^19996648 is an apocalyptic number.

It is an amenable number.

19996648 is an abundant number, since it is smaller than the sum of its proper divisors (22853432).

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

19996648 is a wasteful number, since it uses less digits than its factorization.

19996648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357096 (or 357092 counting only the distinct ones).

The product of its digits is 839808, while the sum is 52.

The square root of 19996648 is about 4471.7611743026. The cubic root of 19996648 is about 271.4265962658.

The spelling of 19996648 in words is "nineteen million, nine hundred ninety-six thousand, six hundred forty-eight".