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68286 = 2319599
BaseRepresentation
bin10000101010111110
310110200010
4100222332
54141121
61244050
7403041
oct205276
9113603
1068286
1147339
1233626
132510a
141ac58
1515376
hex10abe

68286 has 16 divisors (see below), whose sum is σ = 144000. Its totient is φ = 21528.

The previous prime is 68281. The next prime is 68311.

68286 is nontrivially palindromic in base 10.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68281) by changing a digit.

68286 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186 + ... + 413.

It is an arithmetic number, because the mean of its divisors is an integer number (9000).

268286 is an apocalyptic number.

68286 is an abundant number, since it is smaller than the sum of its proper divisors (75714).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72000).

68286 is a wasteful number, since it uses less digits than its factorization.

68286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623.

The product of its digits is 4608, while the sum is 30.

The square root of 68286 is about 261.3159007791. The cubic root of 68286 is about 40.8736941853.

The spelling of 68286 in words is "sixty-eight thousand, two hundred eighty-six".

Divisors: 1 2 3 6 19 38 57 114 599 1198 1797 3594 11381 22762 34143 68286