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68758860 = 22358313807
BaseRepresentation
bin1000001100100…
…10110101001100
311210101022102110
410012102311030
5120100240420
610453424020
71463304102
oct406226514
9153338373
1068758860
11358a3605
121b03b010
1311325921
1491bbc72
156082ee0
hex4192d4c

68758860 has 48 divisors (see below), whose sum is σ = 194858496. Its totient is φ = 18113472.

The previous prime is 68758847. The next prime is 68758867. The reversal of 68758860 is 6885786.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68758867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1924 + ... + 11883.

It is an arithmetic number, because the mean of its divisors is an integer number (4059552).

Almost surely, 268758860 is an apocalyptic number.

68758860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68758860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97429248).

68758860 is an abundant number, since it is smaller than the sum of its proper divisors (126099636).

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

68758860 is a wasteful number, since it uses less digits than its factorization.

68758860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13902 (or 13900 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 68758860 is about 8292.0962367787. The cubic root of 68758860 is about 409.6782325722.

The spelling of 68758860 in words is "sixty-eight million, seven hundred fifty-eight thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 83 166 249 332 415 498 830 996 1245 1660 2490 4980 13807 27614 41421 55228 69035 82842 138070 165684 207105 276140 414210 828420 1145981 2291962 3437943 4583924 5729905 6875886 11459810 13751772 17189715 22919620 34379430 68758860