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68485812 = 22323248137
BaseRepresentation
bin1000001010100…
…00001010110100
311202212102212120
410011100022310
5120013021222
610443515540
71461056043
oct405201264
9152772776
1068485812
113572744a
121ab28bb0
131125b565
14914a55a
15602c15c
hex41502b4

68485812 has 24 divisors (see below), whose sum is σ = 166748736. Its totient is φ = 21835968.

The previous prime is 68485793. The next prime is 68485817. The reversal of 68485812 is 21858486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68485817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123793 + ... + 124344.

It is an arithmetic number, because the mean of its divisors is an integer number (6947864).

Almost surely, 268485812 is an apocalyptic number.

It is an amenable number.

68485812 is an abundant number, since it is smaller than the sum of its proper divisors (98262924).

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

68485812 is a wasteful number, since it uses less digits than its factorization.

68485812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248167 (or 248165 counting only the distinct ones).

The product of its digits is 122880, while the sum is 42.

The square root of 68485812 is about 8275.6155058098. The cubic root of 68485812 is about 409.1352226924.

The spelling of 68485812 in words is "sixty-eight million, four hundred eighty-five thousand, eight hundred twelve".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 248137 496274 744411 992548 1488822 2977644 5707151 11414302 17121453 22828604 34242906 68485812