19968746 has 16 divisors (see below), whose sum is σ = 34292160. Its totient is φ = 8543040.

The previous prime is 19968737. The next prime is 19968769. The reversal of 19968746 is 64786991.

It is a junction number, because it is equal to n+sod(n) for n = 19968694 and 19968703.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11525 + ... + 13143.

It is an arithmetic number, because the mean of its divisors is an integer number (2143260).

Almost surely, 2^19968746 is an apocalyptic number.

19968746 is a deficient number, since it is larger than the sum of its proper divisors (14323414).

19968746 is a wasteful number, since it uses less digits than its factorization.

19968746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2509.

The product of its digits is 653184, while the sum is 50.

The square root of 19968746 is about 4468.6402853665. The cubic root of 19968746 is about 271.3002939297.

The spelling of 19968746 in words is "nineteen million, nine hundred sixty-eight thousand, seven hundred forty-six".