19787948 has 12 divisors (see below), whose sum is σ = 34965840. Its totient is φ = 9797712.

The previous prime is 19787941. The next prime is 19787959. The reversal of 19787948 is 84978791.

It is a self number, because there is not a number n which added to its sum of digits gives 19787948.

It is not an unprimeable number, because it can be changed into a prime (19787941) 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, 23603 + ... + 24426.

It is an arithmetic number, because the mean of its divisors is an integer number (2913820).

Almost surely, 2^19787948 is an apocalyptic number.

It is an amenable number.

19787948 is a deficient number, since it is larger than the sum of its proper divisors (15177892).

19787948 is a wasteful number, since it uses less digits than its factorization.

19787948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48136 (or 48134 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 53.

The square root of 19787948 is about 4448.3646433268. The cubic root of 19787948 is about 270.4790216100.

The spelling of 19787948 in words is "nineteen million, seven hundred eighty-seven thousand, nine hundred forty-eight".