19797316 has 96 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 6842880.

The previous prime is 19797269. The next prime is 19797347. The reversal of 19797316 is 61379791.

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, 99385 + ... + 99583.

It is an arithmetic number, because the mean of its divisors is an integer number (504000).

Almost surely, 2^19797316 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 19797316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24192000).

19797316 is an abundant number, since it is smaller than the sum of its proper divisors (28586684).

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

19797316 is a wasteful number, since it uses less digits than its factorization.

19797316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its digits is 71442, while the sum is 43.

The square root of 19797316 is about 4449.4174899643. The cubic root of 19797316 is about 270.5216982217.

The spelling of 19797316 in words is "nineteen million, seven hundred ninety-seven thousand, three hundred sixteen".