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68115029 = 2331831151
BaseRepresentation
bin1000000111101…
…01101001010101
311202011121020212
410003311221111
5114414140104
610431535205
71454653043
oct403655125
9152147225
1068115029
11354a3914
121a98a505
131115b868
149091393
155ea736e
hex40f5a55

68115029 has 16 divisors (see below), whose sum is σ = 74317824. Its totient is φ = 62238000.

The previous prime is 68115007. The next prime is 68115041. The reversal of 68115029 is 92051186.

It is not a de Polignac number, because 68115029 - 216 = 68049493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68114986 and 68115004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68115329) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 58604 + ... + 59754.

It is an arithmetic number, because the mean of its divisors is an integer number (4644864).

Almost surely, 268115029 is an apocalyptic number.

It is an amenable number.

68115029 is a deficient number, since it is larger than the sum of its proper divisors (6202795).

68115029 is a wasteful number, since it uses less digits than its factorization.

68115029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 68115029 is about 8253.1829617427. The cubic root of 68115029 is about 408.3955318645.

The spelling of 68115029 in words is "sixty-eight million, one hundred fifteen thousand, twenty-nine".

Divisors: 1 23 31 83 713 1151 1909 2573 26473 35681 59179 95533 820663 2197259 2961523 68115029