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68237285 = 5122311159
BaseRepresentation
bin1000001000100…
…11011111100101
311202101210221212
410010103133211
5114432043120
610434321205
71456002344
oct404233745
9152353855
1068237285
1135577756
121aa29205
13111a23bc
1490c3b5b
155ecd6c5
hex41137e5

68237285 has 8 divisors (see below), whose sum is σ = 81959040. Its totient is φ = 54540304.

The previous prime is 68237263. The next prime is 68237291. The reversal of 68237285 is 58273286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68237285 - 210 = 68236261 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 536 + ... + 11694.

It is an arithmetic number, because the mean of its divisors is an integer number (10244880).

Almost surely, 268237285 is an apocalyptic number.

It is an amenable number.

68237285 is a deficient number, since it is larger than the sum of its proper divisors (13721755).

68237285 is a wasteful number, since it uses less digits than its factorization.

68237285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12387.

The product of its digits is 161280, while the sum is 41.

The square root of 68237285 is about 8260.5862382763. The cubic root of 68237285 is about 408.6397215493.

The spelling of 68237285 in words is "sixty-eight million, two hundred thirty-seven thousand, two hundred eighty-five".

Divisors: 1 5 1223 6115 11159 55795 13647457 68237285