Search a number
-
+
2005308160 = 2853197521
BaseRepresentation
bin111011110000110…
…1001001100000000
312011202100012122121
41313201221030000
513101324330120
6530552414024
7100456560322
oct16741511400
95152305577
102005308160
11939a42779
1247b6a7314
1325c5b549b
1415047b612
15bb0b05aa
hex77869300

2005308160 has 144 divisors (see below), whose sum is σ = 5019017472. Its totient is φ = 766771200.

The previous prime is 2005308143. The next prime is 2005308161. The reversal of 2005308160 is 618035002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005308161) 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, 3848700 + ... + 3849220.

It is an arithmetic number, because the mean of its divisors is an integer number (34854288).

Almost surely, 22005308160 is an apocalyptic number.

2005308160 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 2005308160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2509508736).

2005308160 is an abundant number, since it is smaller than the sum of its proper divisors (3013709312).

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

2005308160 is an equidigital number, since it uses as much as digits as its factorization.

2005308160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 656 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2005308160 is about 44780.6672571993. The cubic root of 2005308160 is about 1261.0347089818.

The spelling of 2005308160 in words is "two billion, five million, three hundred eight thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 20 31 32 40 62 64 80 97 124 128 155 160 194 248 256 310 320 388 485 496 521 620 640 776 970 992 1042 1240 1280 1552 1940 1984 2084 2480 2605 3007 3104 3880 3968 4168 4960 5210 6014 6208 7760 7936 8336 9920 10420 12028 12416 15035 15520 16151 16672 19840 20840 24056 24832 30070 31040 32302 33344 39680 41680 48112 50537 60140 62080 64604 66688 80755 83360 96224 101074 120280 124160 129208 133376 161510 166720 192448 202148 240560 252685 258416 323020 333440 384896 404296 481120 505370 516832 646040 666880 769792 808592 962240 1010740 1033664 1292080 1566647 1617184 1924480 2021480 2067328 2584160 3133294 3234368 3848960 4042960 4134656 5168320 6266588 6468736 7833235 8085920 10336640 12533176 12937472 15666470 16171840 20673280 25066352 31332940 32343680 50132704 62665880 64687360 100265408 125331760 200530816 250663520 401061632 501327040 1002654080 2005308160