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68236412 = 22137239521
BaseRepresentation
bin1000001000100…
…11010001111100
311202101202202112
410010103101330
5114432031122
610434313152
71455666656
oct404232174
9152352675
1068236412
1135577032
121aa287b8
13111a1b9a
1490c36d6
155ecd2e2
hex411347c

68236412 has 24 divisors (see below), whose sum is σ = 121020480. Its totient is φ = 33662720.

The previous prime is 68236409. The next prime is 68236417. The reversal of 68236412 is 21463286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68236417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130712 + ... + 131232.

It is an arithmetic number, because the mean of its divisors is an integer number (5042520).

Almost surely, 268236412 is an apocalyptic number.

It is an amenable number.

68236412 is a deficient number, since it is larger than the sum of its proper divisors (52784068).

68236412 is a wasteful number, since it uses less digits than its factorization.

68236412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 899 counting only the distinct ones).

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

The square root of 68236412 is about 8260.5333968213. The cubic root of 68236412 is about 408.6379788852.

Adding to 68236412 its reverse (21463286), we get a palindrome (89699698).

The spelling of 68236412 in words is "sixty-eight million, two hundred thirty-six thousand, four hundred twelve".

Divisors: 1 2 4 137 239 274 478 521 548 956 1042 2084 32743 65486 71377 124519 130972 142754 249038 285508 498076 17059103 34118206 68236412