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68288626 = 2717286927
BaseRepresentation
bin1000001001000…
…00000001110010
311202111102101101
410010200001302
5114440214001
610435355014
71456305130
oct404400162
9152442341
1068288626
113560228a
121aa52a6a
13111bc893
1490d8750
155edda01
hex4120072

68288626 has 16 divisors (see below), whose sum is σ = 123952896. Its totient is φ = 27544896.

The previous prime is 68288617. The next prime is 68288639. The reversal of 68288626 is 62688286.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143226 + ... + 143701.

It is an arithmetic number, because the mean of its divisors is an integer number (7747056).

Almost surely, 268288626 is an apocalyptic number.

68288626 is a deficient number, since it is larger than the sum of its proper divisors (55664270).

68288626 is a wasteful number, since it uses less digits than its factorization.

68288626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286953.

The product of its digits is 442368, while the sum is 46.

The square root of 68288626 is about 8263.6932421285. The cubic root of 68288626 is about 408.7421812356.

The spelling of 68288626 in words is "sixty-eight million, two hundred eighty-eight thousand, six hundred twenty-six".

Divisors: 1 2 7 14 17 34 119 238 286927 573854 2008489 4016978 4877759 9755518 34144313 68288626