19681712 has 10 divisors (see below), whose sum is σ = 38133348. Its totient is φ = 9840848.

The previous prime is 19681703. The next prime is 19681723. The reversal of 19681712 is 21718691.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615038 + ... + 615069.

Almost surely, 2^19681712 is an apocalyptic number.

It is an amenable number.

19681712 is a deficient number, since it is larger than the sum of its proper divisors (18451636).

19681712 is a wasteful number, since it uses less digits than its factorization.

19681712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230115 (or 1230109 counting only the distinct ones).

The product of its digits is 6048, while the sum is 35.

The square root of 19681712 is about 4436.4075556693. The cubic root of 19681712 is about 269.9941105254.

The spelling of 19681712 in words is "nineteen million, six hundred eighty-one thousand, seven hundred twelve".