318545472 has 140 divisors (see below), whose sum is σ = 984652336. Its totient is φ = 90881280.

The previous prime is 318545471. The next prime is 318545489. The reversal of 318545472 is 274545813.

It is a self number, because there is not a number n which added to its sum of digits gives 318545472.

It is not an unprimeable number, because it can be changed into a prime (318545471) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 460647 + ... + 461337.

Almost surely, 2^318545472 is an apocalyptic number.

318545472 is a gapful number since it is divisible by the number (32) 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 318545472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492326168).

318545472 is an abundant number, since it is smaller than the sum of its proper divisors (666106864).

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

318545472 is an frugal number, since it uses more digits than its factorization.

318545472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 703 counting only the distinct ones).

The product of its digits is 134400, while the sum is 39.

The square root of 318545472 is about 17847.8422225209. The cubic root of 318545472 is about 682.9524678830.

The spelling of 318545472 in words is "three hundred eighteen million, five hundred forty-five thousand, four hundred seventy-two".