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68208616 = 2372352957
BaseRepresentation
bin1000001000011…
…00011111101000
311202100100122001
410010030133220
5114430133431
610433540344
71455522640
oct404143750
9152310561
1068208616
1135558163
121aa146b4
1311192338
1490b7520
155ec4e61
hex410c7e8

68208616 has 32 divisors (see below), whose sum is σ = 152519040. Its totient is φ = 27960768.

The previous prime is 68208611. The next prime is 68208617. The reversal of 68208616 is 61680286.

It is not an unprimeable number, because it can be changed into a prime (68208611) 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 7 ways as a sum of consecutive naturals, for example, 25191 + ... + 27766.

It is an arithmetic number, because the mean of its divisors is an integer number (4766220).

Almost surely, 268208616 is an apocalyptic number.

It is an amenable number.

68208616 is an abundant number, since it is smaller than the sum of its proper divisors (84310424).

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

68208616 is a wasteful number, since it uses less digits than its factorization.

68208616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52993 (or 52989 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 68208616 is about 8258.8507675100. The cubic root of 68208616 is about 408.5824853270.

The spelling of 68208616 in words is "sixty-eight million, two hundred eight thousand, six hundred sixteen".

Divisors: 1 2 4 7 8 14 23 28 46 56 92 161 184 322 644 1288 52957 105914 211828 370699 423656 741398 1218011 1482796 2436022 2965592 4872044 8526077 9744088 17052154 34104308 68208616