19690080 has 192 divisors, whose sum is σ = 69672960. Its totient is φ = 4644864.

The previous prime is 19690079. The next prime is 19690091. The reversal of 19690080 is 8009691.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154977 + ... + 155103.

It is an arithmetic number, because the mean of its divisors is an integer number (362880).

Almost surely, 2^19690080 is an apocalyptic number.

19690080 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 19690080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34836480).

19690080 is an abundant number, since it is smaller than the sum of its proper divisors (49982880).

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

19690080 is a wasteful number, since it uses less digits than its factorization.

19690080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 19690080 is about 4437.3505608640. The cubic root of 19690080 is about 270.0323692331.

The spelling of 19690080 in words is "nineteen million, six hundred ninety thousand, eighty".