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68308808 = 2337230773
BaseRepresentation
bin1000001001001…
…00111101001000
311202112110001212
410010210331020
5114441340213
610440032252
71456421021
oct404447510
9152473055
1068308808
1135616467
121aa62688
13111c8b19
149101c48
155ee49a8
hex4124f48

68308808 has 16 divisors (see below), whose sum is σ = 131541180. Its totient is φ = 33231168.

The previous prime is 68308787. The next prime is 68308847. The reversal of 68308808 is 80880386.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68194564 + 114244 = 8258^2 + 338^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115091 + ... + 115682.

Almost surely, 268308808 is an apocalyptic number.

It is an amenable number.

68308808 is a deficient number, since it is larger than the sum of its proper divisors (63232372).

68308808 is a wasteful number, since it uses less digits than its factorization.

68308808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230816 (or 230812 counting only the distinct ones).

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

The square root of 68308808 is about 8264.9142766274. The cubic root of 68308808 is about 408.7824437833.

The spelling of 68308808 in words is "sixty-eight million, three hundred eight thousand, eight hundred eight".

Divisors: 1 2 4 8 37 74 148 296 230773 461546 923092 1846184 8538601 17077202 34154404 68308808