19986896 has 20 divisors (see below), whose sum is σ = 38902272. Its totient is φ = 9947616.

The previous prime is 19986893. The next prime is 19986929. The reversal of 19986896 is 69868991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19986893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881 + ... + 6383.

Almost surely, 2^19986896 is an apocalyptic number.

19986896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19986896 is a deficient number, since it is larger than the sum of its proper divisors (18915376).

19986896 is a wasteful number, since it uses less digits than its factorization.

19986896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5738 (or 5732 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 56.

The square root of 19986896 is about 4470.6706432033. The cubic root of 19986896 is about 271.3824658266.

The spelling of 19986896 in words is "nineteen million, nine hundred eighty-six thousand, eight hundred ninety-six".