19887148 has 12 divisors (see below), whose sum is σ = 36634360. Its totient is φ = 9420192.

The previous prime is 19887121. The next prime is 19887149. The reversal of 19887148 is 84178891.

It is a junction number, because it is equal to n+sod(n) for n = 19887098 and 19887107.

It is not an unprimeable number, because it can be changed into a prime (19887149) 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, 130761 + ... + 130912.

Almost surely, 2^19887148 is an apocalyptic number.

It is an amenable number.

19887148 is a deficient number, since it is larger than the sum of its proper divisors (16747212).

19887148 is a wasteful number, since it uses less digits than its factorization.

19887148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261696 (or 261694 counting only the distinct ones).

The product of its digits is 129024, while the sum is 46.

The square root of 19887148 is about 4459.5008689314. The cubic root of 19887148 is about 270.9302526079.

The spelling of 19887148 in words is "nineteen million, eight hundred eighty-seven thousand, one hundred forty-eight".