19646968 has 64 divisors (see below), whose sum is σ = 44478720. Its totient is φ = 8025600.

The previous prime is 19646959. The next prime is 19646983. The reversal of 19646968 is 86964691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34123 + ... + 34693.

It is an arithmetic number, because the mean of its divisors is an integer number (694980).

Almost surely, 2^19646968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19646968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22239360).

19646968 is an abundant number, since it is smaller than the sum of its proper divisors (24831752).

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

19646968 is a wasteful number, since it uses less digits than its factorization.

19646968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628 (or 624 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 19646968 is about 4432.4900451101. The cubic root of 19646968 is about 269.8351439904.

The spelling of 19646968 in words is "nineteen million, six hundred forty-six thousand, nine hundred sixty-eight".