19999704 has 64 divisors (see below), whose sum is σ = 53568000. Its totient is φ = 6203520.

The previous prime is 19999697. The next prime is 19999729. The reversal of 19999704 is 40799991.

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, 27457 + ... + 28175.

It is an arithmetic number, because the mean of its divisors is an integer number (837000).

Almost surely, 2^19999704 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 19999704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26784000).

19999704 is an abundant number, since it is smaller than the sum of its proper divisors (33568296).

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

19999704 is a wasteful number, since it uses less digits than its factorization.

19999704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 19999704 is about 4472.1028610711. The cubic root of 19999704 is about 271.4404225402.

The spelling of 19999704 in words is "nineteen million, nine hundred ninety-nine thousand, seven hundred four".