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68585286 = 23711532801
BaseRepresentation
bin1000001011010…
…00011101000110
311210001111022210
410011220131012
5120024212121
610450004250
71461652050
oct405503506
9153044283
1068585286
1135795160
121ab76686
1311294913
1491748d0
15604b876
hex4168746

68585286 has 64 divisors (see below), whose sum is σ = 174306816. Its totient is φ = 17472000.

The previous prime is 68585263. The next prime is 68585291. The reversal of 68585286 is 68258586.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 23086 + ... + 25886.

It is an arithmetic number, because the mean of its divisors is an integer number (2723544).

Almost surely, 268585286 is an apocalyptic number.

68585286 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 68585286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87153408).

68585286 is an abundant number, since it is smaller than the sum of its proper divisors (105721530).

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

68585286 is a wasteful number, since it uses less digits than its factorization.

68585286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877.

The product of its digits is 921600, while the sum is 48.

The square root of 68585286 is about 8281.6233915821. The cubic root of 68585286 is about 409.3332132318. Note that the first 3 decimals are identical.

The spelling of 68585286 in words is "sixty-eight million, five hundred eighty-five thousand, two hundred eighty-six".

Divisors: 1 2 3 6 7 11 14 21 22 33 42 53 66 77 106 154 159 231 318 371 462 583 742 1113 1166 1749 2226 2801 3498 4081 5602 8162 8403 12243 16806 19607 24486 30811 39214 58821 61622 92433 117642 148453 184866 215677 296906 431354 445359 647031 890718 1039171 1294062 1632983 2078342 3117513 3265966 4898949 6235026 9797898 11430881 22861762 34292643 68585286