19676684928 has 128 divisors (see below), whose sum is σ = 52939860480. Its totient is φ = 6474783744.

The previous prime is 19676684927. The next prime is 19676684947. The reversal of 19676684928 is 82948667691.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (19676684927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17520975 + ... + 17522097.

It is an arithmetic number, because the mean of its divisors is an integer number (413592660).

Almost surely, 2^19676684928 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 19676684928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26469930240).

19676684928 is an abundant number, since it is smaller than the sum of its proper divisors (33263175552).

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

19676684928 is a wasteful number, since it uses less digits than its factorization.

19676684928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1674 counting only the distinct ones).

The product of its digits is 62705664, while the sum is 66.

The spelling of 19676684928 in words is "nineteen billion, six hundred seventy-six million, six hundred eighty-four thousand, nine hundred twenty-eight".