19516968 has 48 divisors (see below), whose sum is σ = 53214720. Its totient is φ = 6461856.

The previous prime is 19516963. The next prime is 19516993. The reversal of 19516968 is 86961591.

It is not an unprimeable number, because it can be changed into a prime (19516963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10905 + ... + 12567.

It is an arithmetic number, because the mean of its divisors is an integer number (1108640).

Almost surely, 2^19516968 is an apocalyptic number.

19516968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19516968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26607360).

19516968 is an abundant number, since it is smaller than the sum of its proper divisors (33697752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19516968 is a wasteful number, since it uses less digits than its factorization.

19516968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1838 (or 1831 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 19516968 is about 4417.8012630719. The cubic root of 19516968 is about 269.2386783569.

The spelling of 19516968 in words is "nineteen million, five hundred sixteen thousand, nine hundred sixty-eight".