19699316 has 72 divisors (see below), whose sum is σ = 44763264. Its totient is φ = 7413120.

The previous prime is 19699301. The next prime is 19699321. The reversal of 19699316 is 61399691.

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 23 ways as a sum of consecutive naturals, for example, 108746 + ... + 108926.

It is an arithmetic number, because the mean of its divisors is an integer number (621712).

Almost surely, 2^19699316 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 19699316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22381632).

19699316 is an abundant number, since it is smaller than the sum of its proper divisors (25063948).

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

19699316 is a wasteful number, since it uses less digits than its factorization.

19699316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 226 counting only the distinct ones).

The product of its digits is 78732, while the sum is 44.

The square root of 19699316 is about 4438.3911499551. The cubic root of 19699316 is about 270.0745838763.

The spelling of 19699316 in words is "nineteen million, six hundred ninety-nine thousand, three hundred sixteen".