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68237724 = 22389181353
BaseRepresentation
bin1000001000100…
…11100110011100
311202101211120010
410010103212130
5114432101344
610434323220
71456003542
oct404234634
9152354503
1068237724
1135578015
121aa29510
13111a2669
1490c3d92
155ecd8b9
hex411399c

68237724 has 48 divisors (see below), whose sum is σ = 162358560. Its totient is φ = 22302720.

The previous prime is 68237669. The next prime is 68237747. The reversal of 68237724 is 42773286.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 193132 + ... + 193484.

It is an arithmetic number, because the mean of its divisors is an integer number (3382470).

Almost surely, 268237724 is an apocalyptic number.

It is an amenable number.

68237724 is an abundant number, since it is smaller than the sum of its proper divisors (94120836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68237724 is a wasteful number, since it uses less digits than its factorization.

68237724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630 (or 628 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 68237724 is about 8260.6128101976. The cubic root of 68237724 is about 408.6405978662.

The spelling of 68237724 in words is "sixty-eight million, two hundred thirty-seven thousand, seven hundred twenty-four".

Divisors: 1 2 3 4 6 12 89 178 181 267 353 356 362 534 543 706 724 1059 1068 1086 1412 2118 2172 4236 16109 31417 32218 48327 62834 63893 64436 94251 96654 125668 127786 188502 191679 193308 255572 377004 383358 766716 5686477 11372954 17059431 22745908 34118862 68237724