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68186888 = 23711229347
BaseRepresentation
bin1000001000001…
…11001100001000
311202022020211022
410010013030020
5114423440023
610433252012
71455402410
oct404071410
9152266738
1068186888
1135542900
121aa04008
1311185493
1490ad640
155ebd7c8
hex4107308

68186888 has 96 divisors (see below), whose sum is σ = 166622400. Its totient is φ = 25576320.

The previous prime is 68186879. The next prime is 68186903. The reversal of 68186888 is 88868186.

It is a super-3 number, since 3×681868883 (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196331 + ... + 196677.

It is an arithmetic number, because the mean of its divisors is an integer number (1735650).

Almost surely, 268186888 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 68186888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83311200).

68186888 is an abundant number, since it is smaller than the sum of its proper divisors (98435512).

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

68186888 is a wasteful number, since it uses less digits than its factorization.

68186888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 396 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 53.

The square root of 68186888 is about 8257.5352254774. The cubic root of 68186888 is about 408.5390957789.

The spelling of 68186888 in words is "sixty-eight million, one hundred eighty-six thousand, eight hundred eighty-eight".

Divisors: 1 2 4 7 8 11 14 22 28 29 44 56 58 77 88 116 121 154 203 232 242 308 319 347 406 484 616 638 694 812 847 968 1276 1388 1624 1694 2233 2429 2552 2776 3388 3509 3817 4466 4858 6776 7018 7634 8932 9716 10063 14036 15268 17864 19432 20126 24563 26719 28072 30536 40252 41987 49126 53438 70441 80504 83974 98252 106876 110693 140882 167948 196504 213752 221386 281764 293909 335896 442772 563528 587818 774851 885544 1175636 1217623 1549702 2351272 2435246 3099404 4870492 6198808 8523361 9740984 17046722 34093444 68186888