19681352 has 16 divisors (see below), whose sum is σ = 36960300. Its totient is φ = 9825280.

The previous prime is 19681339. The next prime is 19681357. The reversal of 19681352 is 25318691.

It can be written as a sum of positive squares in 2 ways, for example, as 14546596 + 5134756 = 3814^2 + 2266^2 .

It is not an unprimeable number, because it can be changed into a prime (19681357) 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, 4952 + ... + 7992.

Almost surely, 2^19681352 is an apocalyptic number.

It is an amenable number.

19681352 is a deficient number, since it is larger than the sum of its proper divisors (17278948).

19681352 is a wasteful number, since it uses less digits than its factorization.

19681352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3852 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 19681352 is about 4436.3669821150. The cubic root of 19681352 is about 269.9924643530.

The spelling of 19681352 in words is "nineteen million, six hundred eighty-one thousand, three hundred fifty-two".