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68308485 = 3572922433
BaseRepresentation
bin1000001001001…
…00111000000101
311202112102121220
410010210320011
5114441332420
610440030553
71456420050
oct404447005
9152472556
1068308485
11356161a3
121aa62459
13111c892b
149101a97
155ee4840
hex4124e05

68308485 has 32 divisors (see below), whose sum is σ = 129219840. Its totient is φ = 30148608.

The previous prime is 68308483. The next prime is 68308517. The reversal of 68308485 is 58480386.

It is not a de Polignac number, because 68308485 - 21 = 68308483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68308483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8172 + ... + 14261.

It is an arithmetic number, because the mean of its divisors is an integer number (4038120).

Almost surely, 268308485 is an apocalyptic number.

It is an amenable number.

68308485 is a deficient number, since it is larger than the sum of its proper divisors (60911355).

68308485 is a wasteful number, since it uses less digits than its factorization.

68308485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22477.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 68308485 is about 8264.8947361718. The cubic root of 68308485 is about 408.7817994694.

The spelling of 68308485 in words is "sixty-eight million, three hundred eight thousand, four hundred eighty-five".

Divisors: 1 3 5 7 15 21 29 35 87 105 145 203 435 609 1015 3045 22433 67299 112165 157031 336495 471093 650557 785155 1951671 2355465 3252785 4553899 9758355 13661697 22769495 68308485