Search a number
-
+
808368768 = 27331713759
BaseRepresentation
bin110000001011101…
…011101010000000
32002100002101111000
4300023223222000
53123420300033
6212114052000
726014010154
oct6013535200
92070071430
10808368768
11385337469
121a687a000
13cb62311c
1479507064
154ae7ba13
hex302eba80

808368768 has 128 divisors (see below), whose sum is σ = 2526336000. Its totient is φ = 253587456.

The previous prime is 808368763. The next prime is 808368791. The reversal of 808368768 is 867863808.

It is a happy number.

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

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

It is not an unprimeable number, because it can be changed into a prime (808368763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51873 + ... + 65631.

It is an arithmetic number, because the mean of its divisors is an integer number (19737000).

Almost surely, 2808368768 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 808368768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1263168000).

808368768 is an abundant number, since it is smaller than the sum of its proper divisors (1717967232).

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

808368768 is a wasteful number, since it uses less digits than its factorization.

808368768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13799 (or 13781 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 54.

The square root of 808368768 is about 28431.8266736416. The cubic root of 808368768 is about 931.5435760561.

The spelling of 808368768 in words is "eight hundred eight million, three hundred sixty-eight thousand, seven hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 17 18 24 27 32 34 36 48 51 54 64 68 72 96 102 108 128 136 144 153 192 204 216 272 288 306 384 408 432 459 544 576 612 816 864 918 1088 1152 1224 1632 1728 1836 2176 2448 3264 3456 3672 4896 6528 7344 9792 13759 14688 19584 27518 29376 41277 55036 58752 82554 110072 123831 165108 220144 233903 247662 330216 371493 440288 467806 495324 660432 701709 742986 880576 935612 990648 1320864 1403418 1485972 1761152 1871224 1981296 2105127 2641728 2806836 2971944 3742448 3962592 4210254 5283456 5613672 5943888 6315381 7484896 7925184 8420508 11227344 11887776 12630762 14969792 15850368 16841016 22454688 23775552 25261524 29939584 33682032 44909376 47551104 50523048 67364064 89818752 101046096 134728128 202092192 269456256 404184384 808368768