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68053845 = 3559131587
BaseRepresentation
bin1000000111001…
…10101101010101
311202001111022210
410003212231111
5114410210340
610430344033
71454306466
oct403465525
9152044283
1068053845
1135461952
121a95b019
1311139a62
149076d6d
155e94180
hex40e6b55

68053845 has 32 divisors (see below), whose sum is σ = 111767040. Its totient is φ = 35347520.

The previous prime is 68053837. The next prime is 68053861. The reversal of 68053845 is 54835086.

It is a happy number.

It is not a de Polignac number, because 68053845 - 23 = 68053837 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 31 ways as a sum of consecutive naturals, for example, 115642 + ... + 116228.

It is an arithmetic number, because the mean of its divisors is an integer number (3492720).

Almost surely, 268053845 is an apocalyptic number.

It is an amenable number.

68053845 is a deficient number, since it is larger than the sum of its proper divisors (43713195).

68053845 is a wasteful number, since it uses less digits than its factorization.

68053845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 68053845 is about 8249.4754378688. The cubic root of 68053845 is about 408.2732154541.

The spelling of 68053845 in words is "sixty-eight million, fifty-three thousand, eight hundred forty-five".

Divisors: 1 3 5 15 59 131 177 295 393 587 655 885 1761 1965 2935 7729 8805 23187 34633 38645 76897 103899 115935 173165 230691 384485 519495 1153455 4536923 13610769 22684615 68053845