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68124238 = 2713228793
BaseRepresentation
bin1000000111101…
…11111001001110
311202012001212221
410003313321032
5114414433423
610432045554
71455021640
oct403677116
9152161787
1068124238
11354aa826
121a9938ba
1311162b00
149094890
155ea9e5d
hex40f7e4e

68124238 has 24 divisors (see below), whose sum is σ = 126463248. Its totient is φ = 26949312.

The previous prime is 68124233. The next prime is 68124271. The reversal of 68124238 is 83242186.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68124233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12031 + ... + 16762.

It is an arithmetic number, because the mean of its divisors is an integer number (5269302).

Almost surely, 268124238 is an apocalyptic number.

68124238 is a deficient number, since it is larger than the sum of its proper divisors (58339010).

68124238 is a wasteful number, since it uses less digits than its factorization.

68124238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28828 (or 28815 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 68124238 is about 8253.7408488515. The cubic root of 68124238 is about 408.4139357568.

The spelling of 68124238 in words is "sixty-eight million, one hundred twenty-four thousand, two hundred thirty-eight".

Divisors: 1 2 7 13 14 26 91 169 182 338 1183 2366 28793 57586 201551 374309 403102 748618 2620163 4866017 5240326 9732034 34062119 68124238