19999948 has 12 divisors (see below), whose sum is σ = 35574112. Its totient is φ = 9835920.

The previous prime is 19999927. The next prime is 19999963. The reversal of 19999948 is 84999991.

It is a junction number, because it is equal to n+sod(n) for n = 19999892 and 19999901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40740 + ... + 41227.

Almost surely, 2^19999948 is an apocalyptic number.

It is an amenable number.

19999948 is a deficient number, since it is larger than the sum of its proper divisors (15574164).

19999948 is a wasteful number, since it uses less digits than its factorization.

19999948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82032 (or 82030 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 58.

The square root of 19999948 is about 4472.1301412191. The cubic root of 19999948 is about 271.4415264098.

It can be divided in two parts, 1999994 and 8, that added together give a palindrome (2000002).

The spelling of 19999948 in words is "nineteen million, nine hundred ninety-nine thousand, nine hundred forty-eight".