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68305386 = 2311384231
BaseRepresentation
bin1000001001001…
…00000111101010
311202112021101010
410010210013222
5114441233021
610440004350
71456405032
oct404440752
9152467333
1068305386
1135613936
121aa606b6
13111c73b6
1491008c2
155ee3976
hex41241ea

68305386 has 8 divisors (see below), whose sum is σ = 136610784. Its totient is φ = 22768460.

The previous prime is 68305379. The next prime is 68305387. The reversal of 68305386 is 68350386.

It is a sphenic number, since it is the product of 3 distinct primes.

68305386 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (68305387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5692110 + ... + 5692121.

It is an arithmetic number, because the mean of its divisors is an integer number (17076348).

Almost surely, 268305386 is an apocalyptic number.

68305386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68305386 is a wasteful number, since it uses less digits than its factorization.

68305386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11384236.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 68305386 is about 8264.7072543436. The cubic root of 68305386 is about 408.7756175436.

The spelling of 68305386 in words is "sixty-eight million, three hundred five thousand, three hundred eighty-six".

Divisors: 1 2 3 6 11384231 22768462 34152693 68305386