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68320382 = 21317154571
BaseRepresentation
bin1000001001001…
…11110001111110
311202120000221112
410010213301332
5114442223012
610440202022
71456466534
oct404476176
9152500845
1068320382
1135624129
121aa69312
1311201180
149106154
155ee8122
hex4127c7e

68320382 has 16 divisors (see below), whose sum is σ = 116856432. Its totient is φ = 29677440.

The previous prime is 68320381. The next prime is 68320387. The reversal of 68320382 is 28302386.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68320381) 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, 76844 + ... + 77727.

It is an arithmetic number, because the mean of its divisors is an integer number (7303527).

Almost surely, 268320382 is an apocalyptic number.

68320382 is a deficient number, since it is larger than the sum of its proper divisors (48536050).

68320382 is a wasteful number, since it uses less digits than its factorization.

68320382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154603.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 68320382 is about 8265.6144357210. The cubic root of 68320382 is about 408.8055300243.

The spelling of 68320382 in words is "sixty-eight million, three hundred twenty thousand, three hundred eighty-two".

Divisors: 1 2 13 17 26 34 221 442 154571 309142 2009423 2627707 4018846 5255414 34160191 68320382