19856968 has 24 divisors (see below), whose sum is σ = 37876950. Its totient is φ = 9758144.

The previous prime is 19856929. The next prime is 19856971. The reversal of 19856968 is 86965891.

It can be written as a sum of positive squares in only one way, i.e., 18852964 + 1004004 = 4342^2 + 1002^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118821 + ... + 118987.

Almost surely, 2^19856968 is an apocalyptic number.

It is an amenable number.

19856968 is a deficient number, since it is larger than the sum of its proper divisors (18019982).

19856968 is an equidigital number, since it uses as much as digits as its factorization.

19856968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 258 counting only the distinct ones).

The product of its digits is 933120, while the sum is 52.

The square root of 19856968 is about 4456.1157974182. The cubic root of 19856968 is about 270.7931319791.

The spelling of 19856968 in words is "nineteen million, eight hundred fifty-six thousand, nine hundred sixty-eight".