19690050240 has 840 divisors, whose sum is σ = 83878003440. Its totient is φ = 4368494592.

The previous prime is 19690050239. The next prime is 19690050271. The reversal of 19690050240 is 4205009691.

It is a tau number, because it is divible by the number of its divisors (840).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 19690050195 and 19690050204.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 46992751 + ... + 46993169.

It is an arithmetic number, because the mean of its divisors is an integer number (99854766).

Almost surely, 2^19690050240 is an apocalyptic number.

19690050240 is a gapful number since it is divisible by the number (10) 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 19690050240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41939001720).

19690050240 is an abundant number, since it is smaller than the sum of its proper divisors (64187953200).

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

19690050240 is a wasteful number, since it uses less digits than its factorization.

19690050240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 473 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 19690050240 in words is "nineteen billion, six hundred ninety million, fifty thousand, two hundred forty".