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68103078 = 2329391397
BaseRepresentation
bin1000000111100…
…10101110100110
311202010222212020
410003302232212
5114413244303
610431404010
71454603151
oct403625646
9152128766
1068103078
113549593a
121a983606
13111562a4
14908ac98
155ea3a53
hex40f2ba6

68103078 has 16 divisors (see below), whose sum is σ = 140903280. Its totient is φ = 21918176.

The previous prime is 68103043. The next prime is 68103083. The reversal of 68103078 is 87030186.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195525 + ... + 195872.

It is an arithmetic number, because the mean of its divisors is an integer number (8806455).

Almost surely, 268103078 is an apocalyptic number.

68103078 is an abundant number, since it is smaller than the sum of its proper divisors (72800202).

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

68103078 is a wasteful number, since it uses less digits than its factorization.

68103078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391431.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 68103078 is about 8252.4589062897. The cubic root of 68103078 is about 408.3716456995.

The spelling of 68103078 in words is "sixty-eight million, one hundred three thousand, seventy-eight".

Divisors: 1 2 3 6 29 58 87 174 391397 782794 1174191 2348382 11350513 22701026 34051539 68103078