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318472 = 23711247
BaseRepresentation
bin1001101110000001000
3121011212021
41031300020
540142342
610454224
72464330
oct1156010
9534767
10318472
111a8300
12134374
13b1c5b
14840c0
1564567
hex4dc08

318472 has 48 divisors (see below), whose sum is σ = 766080. Its totient is φ = 121440.

The previous prime is 318467. The next prime is 318473. The reversal of 318472 is 274813.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318473) by changing a digit.

318472 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6753 + ... + 6799.

It is an arithmetic number, because the mean of its divisors is an integer number (15960).

2318472 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 318472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (383040).

318472 is an abundant number, since it is smaller than the sum of its proper divisors (447608).

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

318472 is a wasteful number, since it uses less digits than its factorization.

318472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 67 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 318472 is about 564.3332348887. Note that the first 3 decimals coincide. The cubic root of 318472 is about 68.2899956550.

The spelling of 318472 in words is "three hundred eighteen thousand, four hundred seventy-two".

Divisors: 1 2 4 7 8 11 14 22 28 44 47 56 77 88 94 121 154 188 242 308 329 376 484 517 616 658 847 968 1034 1316 1694 2068 2632 3388 3619 4136 5687 6776 7238 11374 14476 22748 28952 39809 45496 79618 159236 318472