Search a number
-
+
808061648000 = 2753371364969
BaseRepresentation
bin10111100001001000011…
…10100011110010000000
32212020202012112220001012
423300210032203302000
5101214402240214000
61415115101300052
7112244343451655
oct13604416436200
92766665486035
10808061648000
11291773809202
12110736264628
135b27a1c58a9
142b178cb9c2c
1516045e18735
hexbc243a3c80

808061648000 has 128 divisors (see below), whose sum is σ = 2063343250800. Its totient is φ = 314488627200.

The previous prime is 808061647927. The next prime is 808061648041. The reversal of 808061648000 is 846160808.

It can be written as a sum of positive squares in 8 ways, for example, as 355111111744 + 452950536256 = 595912^2 + 673016^2 .

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90485 + ... + 1274484.

Almost surely, 2808061648000 is an apocalyptic number.

808061648000 is a gapful number since it is divisible by the number (80) 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 808061648000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031671625400).

808061648000 is an abundant number, since it is smaller than the sum of its proper divisors (1255281602800).

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

808061648000 is a wasteful number, since it uses less digits than its factorization.

808061648000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365035 (or 1365013 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 41.

The spelling of 808061648000 in words is "eight hundred eight billion, sixty-one million, six hundred forty-eight thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 37 40 50 64 74 80 100 125 128 148 160 185 200 250 296 320 370 400 500 592 640 740 800 925 1000 1184 1480 1600 1850 2000 2368 2960 3200 3700 4000 4625 4736 5920 7400 8000 9250 11840 14800 16000 18500 23680 29600 37000 59200 74000 118400 148000 296000 592000 1364969 2729938 5459876 6824845 10919752 13649690 21839504 27299380 34124225 43679008 50503853 54598760 68248450 87358016 101007706 109197520 136496900 170621125 174716032 202015412 218395040 252519265 272993800 341242250 404030824 436790080 505038530 545987600 682484500 808061648 873580160 1010077060 1091975200 1262596325 1364969000 1616123296 2020154120 2183950400 2525192650 2729938000 3232246592 4040308240 4367900800 5050385300 5459876000 6312981625 6464493184 8080616480 10100770600 10919752000 12625963250 16161232960 20201541200 21839504000 25251926500 32322465920 40403082400 50503853000 80806164800 101007706000 161612329600 202015412000 404030824000 808061648000