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68382615 = 35719151227
BaseRepresentation
bin1000001001101…
…10111110010111
311202200012022110
410010312332113
5120001220430
610441402103
71460146140
oct404667627
9152605273
1068382615
1135666964
121aa99333
13112235b2
149120ac7
15600b7b0
hex4136f97

68382615 has 64 divisors (see below), whose sum is σ = 133079040. Its totient is φ = 29289600.

The previous prime is 68382607. The next prime is 68382641. The reversal of 68382615 is 51628386.

It is a happy number.

It is not a de Polignac number, because 68382615 - 23 = 68382607 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 301132 + ... + 301358.

It is an arithmetic number, because the mean of its divisors is an integer number (2079360).

Almost surely, 268382615 is an apocalyptic number.

68382615 is a deficient number, since it is larger than the sum of its proper divisors (64696425).

68382615 is a wasteful number, since it uses less digits than its factorization.

68382615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412.

The product of its digits is 69120, while the sum is 39.

The square root of 68382615 is about 8269.3781507439. The cubic root of 68382615 is about 408.9296192683.

It can be divided in two parts, 6838 and 2615, that added together give a triangular number (9453 = T137).

The spelling of 68382615 in words is "sixty-eight million, three hundred eighty-two thousand, six hundred fifteen".

Divisors: 1 3 5 7 15 19 21 35 57 95 105 133 151 227 285 399 453 665 681 755 1057 1135 1589 1995 2265 2869 3171 3405 4313 4767 5285 7945 8607 12939 14345 15855 20083 21565 23835 30191 34277 43035 60249 64695 90573 100415 102831 150955 171385 239939 301245 452865 514155 651263 719817 1199695 1953789 3256315 3599085 4558841 9768945 13676523 22794205 68382615