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68302716 = 2235691893
BaseRepresentation
bin1000001001000…
…11011101111100
311202112010201020
410010203131330
5114441141331
610435544140
71456364166
oct404433574
9152463636
1068302716
1135611929
121aa5b050
13111c6111
1490dd936
155ee2c96
hex412377c

68302716 has 12 divisors (see below), whose sum is σ = 159373032. Its totient is φ = 22767568.

The previous prime is 68302697. The next prime is 68302721. The reversal of 68302716 is 61720386.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×683027162 = 9330522025953312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2845935 + ... + 2845958.

It is an arithmetic number, because the mean of its divisors is an integer number (13281086).

Almost surely, 268302716 is an apocalyptic number.

It is an amenable number.

68302716 is an abundant number, since it is smaller than the sum of its proper divisors (91070316).

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

68302716 is a wasteful number, since it uses less digits than its factorization.

68302716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5691900 (or 5691898 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 68302716 is about 8264.5457225428. The cubic root of 68302716 is about 408.7702912427.

The spelling of 68302716 in words is "sixty-eight million, three hundred two thousand, seven hundred sixteen".

Divisors: 1 2 3 4 6 12 5691893 11383786 17075679 22767572 34151358 68302716