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807889680 = 243351328771
BaseRepresentation
bin110000001001110…
…110101100010000
32002022012001022000
4300021312230100
53123304432210
6212055514000
726006643333
oct6011665420
92068161260
10807889680
1138503a524
121a6688900
13cb4b6040
147942061a
154add4ac0
hex30276b10

807889680 has 160 divisors (see below), whose sum is σ = 2996891520. Its totient is φ = 198858240.

The previous prime is 807889679. The next prime is 807889717. The reversal of 807889680 is 86988708.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13695 + ... + 42465.

It is an arithmetic number, because the mean of its divisors is an integer number (18730572).

Almost surely, 2807889680 is an apocalyptic number.

807889680 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 807889680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498445760).

807889680 is an abundant number, since it is smaller than the sum of its proper divisors (2189001840).

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

807889680 is a wasteful number, since it uses less digits than its factorization.

807889680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28806 (or 28794 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 54.

The square root of 807889680 is about 28423.4002188338. The cubic root of 807889680 is about 931.3595100861.

The spelling of 807889680 in words is "eight hundred seven million, eight hundred eighty-nine thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 27 30 36 39 40 45 48 52 54 60 65 72 78 80 90 104 108 117 120 130 135 144 156 180 195 208 216 234 240 260 270 312 351 360 390 432 468 520 540 585 624 702 720 780 936 1040 1080 1170 1404 1560 1755 1872 2160 2340 2808 3120 3510 4680 5616 7020 9360 14040 28080 28771 57542 86313 115084 143855 172626 230168 258939 287710 345252 374023 431565 460336 517878 575420 690504 748046 776817 863130 1035756 1122069 1150840 1294695 1381008 1496092 1553634 1726260 1870115 2071512 2244138 2301680 2589390 2992184 3107268 3366207 3452520 3740230 3884085 4143024 4488276 5178780 5610345 5984368 6214536 6732414 6905040 7480460 7768170 8976552 10098621 10357560 11220690 12429072 13464828 14960920 15536340 16831035 17953104 20197242 20715120 22441380 26929656 29921840 31072680 33662070 40394484 44882760 50493105 53859312 62145360 67324140 80788968 89765520 100986210 134648280 161577936 201972420 269296560 403944840 807889680