1317952272 has 160 divisors (see below), whose sum is σ = 4270226688. Its totient is φ = 340973568.

The previous prime is 1317952253. The next prime is 1317952297. The reversal of 1317952272 is 2722597131.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1317952272.

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, 228658 + ... + 234350.

Almost surely, 2^1317952272 is an apocalyptic number.

1317952272 is a gapful number since it is divisible by the number (12) 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 1317952272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2135113344).

1317952272 is an abundant number, since it is smaller than the sum of its proper divisors (2952274416).

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

1317952272 is a wasteful number, since it uses less digits than its factorization.

1317952272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777 (or 5771 counting only the distinct ones).

The product of its digits is 52920, while the sum is 39.

The square root of 1317952272 is about 36303.6123822410. The cubic root of 1317952272 is about 1096.3937748931.

The spelling of 1317952272 in words is "one billion, three hundred seventeen million, nine hundred fifty-two thousand, two hundred seventy-two".