19999852 has 6 divisors (see below), whose sum is σ = 34999748. Its totient is φ = 9999924.

The previous prime is 19999843. The next prime is 19999873. The reversal of 19999852 is 25899991.

It is a self number, because there is not a number n which added to its sum of digits gives 19999852.

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 as a sum of consecutive naturals, namely, 2499978 + ... + 2499985.

Almost surely, 2^19999852 is an apocalyptic number.

It is an amenable number.

19999852 is a deficient number, since it is larger than the sum of its proper divisors (14999896).

19999852 is a wasteful number, since it uses less digits than its factorization.

19999852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4999967 (or 4999965 counting only the distinct ones).

The product of its digits is 524880, while the sum is 52.

The square root of 19999852 is about 4472.1194080659. The cubic root of 19999852 is about 271.4410921015.

The spelling of 19999852 in words is "nineteen million, nine hundred ninety-nine thousand, eight hundred fifty-two".