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68386510 = 2519359929
BaseRepresentation
bin1000001001101…
…11111011001110
311202200101122201
410010313323032
5120001332020
610441432114
71460163403
oct404677316
9152611581
1068386510
1135669885
121aa9b63a
13112252ba
1491222aa
15600ca0a
hex4137ece

68386510 has 16 divisors (see below), whose sum is σ = 129574800. Its totient is φ = 25914816.

The previous prime is 68386481. The next prime is 68386517. The reversal of 68386510 is 1568386.

It is a self number, because there is not a number n which added to its sum of digits gives 68386510.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68386517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179775 + ... + 180154.

It is an arithmetic number, because the mean of its divisors is an integer number (8098425).

Almost surely, 268386510 is an apocalyptic number.

68386510 is a deficient number, since it is larger than the sum of its proper divisors (61188290).

68386510 is a wasteful number, since it uses less digits than its factorization.

68386510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359955.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 68386510 is about 8269.6136548209. The cubic root of 68386510 is about 408.9373831843.

The spelling of 68386510 in words is "sixty-eight million, three hundred eighty-six thousand, five hundred ten".

Divisors: 1 2 5 10 19 38 95 190 359929 719858 1799645 3599290 6838651 13677302 34193255 68386510