19938748 has 6 divisors (see below), whose sum is σ = 34892816. Its totient is φ = 9969372.

The previous prime is 19938727. The next prime is 19938757. The reversal of 19938748 is 84783991.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2492340 + ... + 2492347.

Almost surely, 2^19938748 is an apocalyptic number.

It is an amenable number.

19938748 is a deficient number, since it is larger than the sum of its proper divisors (14954068).

19938748 is a wasteful number, since it uses less digits than its factorization.

19938748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4984691 (or 4984689 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 19938748 is about 4465.2825218568. The cubic root of 19938748 is about 271.1643724426.

The spelling of 19938748 in words is "nineteen million, nine hundred thirty-eight thousand, seven hundred forty-eight".