Search a number
-
+
218848960 = 2651179787
BaseRepresentation
bin11010000101101…
…01111011000000
3120020210200100001
431002311323000
5422011131320
633414405344
75265120421
oct1502657300
9506720301
10218848960
11102597510
1261360854
1336456835
14210cb648
151432e20a
hexd0b5ec0

218848960 has 112 divisors (see below), whose sum is σ = 576437760. Its totient is φ = 78474240.

The previous prime is 218848957. The next prime is 218848961. The reversal of 218848960 is 69848812.

It is a self number, because there is not a number n which added to its sum of digits gives 218848960.

It is not an unprimeable number, because it can be changed into a prime (218848961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277687 + ... + 278473.

Almost surely, 2218848960 is an apocalyptic number.

218848960 is a gapful number since it is divisible by the number (20) 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 218848960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288218880).

218848960 is an abundant number, since it is smaller than the sum of its proper divisors (357588800).

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

218848960 is a wasteful number, since it uses less digits than its factorization.

218848960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 218848960 is about 14793.5445380747. The cubic root of 218848960 is about 602.6264124139.

The spelling of 218848960 in words is "two hundred eighteen million, eight hundred forty-eight thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 64 79 80 88 110 158 160 176 220 316 320 352 395 440 632 704 787 790 869 880 1264 1574 1580 1738 1760 2528 3148 3160 3476 3520 3935 4345 5056 6296 6320 6952 7870 8657 8690 12592 12640 13904 15740 17314 17380 25184 25280 27808 31480 34628 34760 43285 50368 55616 62173 62960 69256 69520 86570 124346 125920 138512 139040 173140 248692 251840 277024 278080 310865 346280 497384 554048 621730 683903 692560 994768 1243460 1367806 1385120 1989536 2486920 2735612 2770240 3419515 3979072 4973840 5471224 6839030 9947680 10942448 13678060 19895360 21884896 27356120 43769792 54712240 109424480 218848960