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68533086 = 2317671893
BaseRepresentation
bin1000001010110…
…11101101011110
311202221211201110
410011123231132
5120021024321
610444522450
71461343626
oct405335536
9152854643
1068533086
1135759a16
121ab50426
1311276c2b
14915d886
15603b176
hex415bb5e

68533086 has 16 divisors (see below), whose sum is σ = 145129104. Its totient is φ = 21500544.

The previous prime is 68533079. The next prime is 68533109. The reversal of 68533086 is 68033586.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335845 + ... + 336048.

It is an arithmetic number, because the mean of its divisors is an integer number (9070569).

Almost surely, 268533086 is an apocalyptic number.

68533086 is an abundant number, since it is smaller than the sum of its proper divisors (76596018).

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

68533086 is a wasteful number, since it uses less digits than its factorization.

68533086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671915.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 68533086 is about 8278.4712356811. The cubic root of 68533086 is about 409.2293395581.

Subtracting from 68533086 its reverse (68033586), we obtain a triangular number (499500 = T999).

The spelling of 68533086 in words is "sixty-eight million, five hundred thirty-three thousand, eighty-six".

Divisors: 1 2 3 6 17 34 51 102 671893 1343786 2015679 4031358 11422181 22844362 34266543 68533086