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68196168 = 23341929191
BaseRepresentation
bin1000001000010…
…01011101001000
311202022201120000
410010021131020
5114424234133
610433403000
71455441435
oct404113510
9152281500
1068196168
1135549877
121aa09460
1311189781
1490b2b8c
155ec1413
hex4109748

68196168 has 160 divisors (see below), whose sum is σ = 209088000. Its totient is φ = 20684160.

The previous prime is 68196157. The next prime is 68196199. The reversal of 68196168 is 86169186.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 356953 + ... + 357143.

It is an arithmetic number, because the mean of its divisors is an integer number (1306800).

Almost surely, 268196168 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 68196168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104544000).

68196168 is an abundant number, since it is smaller than the sum of its proper divisors (140891832).

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

68196168 is a wasteful number, since it uses less digits than its factorization.

68196168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 244 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 68196168 is about 8258.0971173752. The cubic root of 68196168 is about 408.5576285249.

The spelling of 68196168 in words is "sixty-eight million, one hundred ninety-six thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 19 24 27 29 36 38 54 57 58 72 76 81 87 108 114 116 152 162 171 174 191 216 228 232 261 324 342 348 382 456 513 522 551 573 648 684 696 764 783 1026 1044 1102 1146 1368 1528 1539 1566 1653 1719 2052 2088 2204 2292 2349 3078 3132 3306 3438 3629 4104 4408 4584 4698 4959 5157 5539 6156 6264 6612 6876 7258 9396 9918 10314 10887 11078 12312 13224 13752 14516 14877 15471 16617 18792 19836 20628 21774 22156 29032 29754 30942 32661 33234 39672 41256 43548 44312 44631 49851 59508 61884 65322 66468 87096 89262 97983 99702 105241 119016 123768 130644 132936 149553 178524 195966 199404 210482 261288 293949 299106 315723 357048 391932 398808 420964 448659 587898 598212 631446 783864 841928 897318 947169 1175796 1196424 1262892 1794636 1894338 2351592 2525784 2841507 3589272 3788676 5683014 7577352 8524521 11366028 17049042 22732056 34098084 68196168