19317272 has 32 divisors (see below), whose sum is σ = 39463200. Its totient is φ = 8811264.

The previous prime is 19317271. The next prime is 19317301. The reversal of 19317272 is 27271391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19317271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8213 + ... + 10299.

It is an arithmetic number, because the mean of its divisors is an integer number (1233225).

Almost surely, 2^19317272 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 19317272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19731600).

19317272 is an abundant number, since it is smaller than the sum of its proper divisors (20145928).

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

19317272 is a wasteful number, since it uses less digits than its factorization.

19317272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2195 (or 2191 counting only the distinct ones).

The product of its digits is 5292, while the sum is 32.

The square root of 19317272 is about 4395.1418634670. The cubic root of 19317272 is about 268.3172525716.

The spelling of 19317272 in words is "nineteen million, three hundred seventeen thousand, two hundred seventy-two".