19956814 has 8 divisors (see below), whose sum is σ = 30967560. Its totient is φ = 9634296.

The previous prime is 19956799. The next prime is 19956823. The reversal of 19956814 is 41865991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171984 + ... + 172099.

It is an arithmetic number, because the mean of its divisors is an integer number (3870945).

Almost surely, 2^19956814 is an apocalyptic number.

19956814 is a deficient number, since it is larger than the sum of its proper divisors (11010746).

19956814 is a wasteful number, since it uses less digits than its factorization.

19956814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344114.

The product of its digits is 77760, while the sum is 43.

The square root of 19956814 is about 4467.3050041384. The cubic root of 19956814 is about 271.2462461343.

The spelling of 19956814 in words is "nineteen million, nine hundred fifty-six thousand, eight hundred fourteen".