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68175378 = 2331279941
BaseRepresentation
bin1000001000001…
…00011000010010
311202021200001000
410010010120102
5114423103003
610433122430
71455324015
oct404043022
9152250030
1068175378
1135535197
121a9b9416
131118017b
1490a937c
155eba1a3
hex4104612

68175378 has 32 divisors (see below), whose sum is σ = 152709120. Its totient is φ = 22543920.

The previous prime is 68175353. The next prime is 68175379. The reversal of 68175378 is 87357186.

It is not an unprimeable number, because it can be changed into a prime (68175379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1888 + ... + 11828.

It is an arithmetic number, because the mean of its divisors is an integer number (4772160).

Almost surely, 268175378 is an apocalyptic number.

68175378 is an abundant number, since it is smaller than the sum of its proper divisors (84533742).

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

68175378 is a wasteful number, since it uses less digits than its factorization.

68175378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10079 (or 10073 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 68175378 is about 8256.8382568632. The cubic root of 68175378 is about 408.5161072458.

The spelling of 68175378 in words is "sixty-eight million, one hundred seventy-five thousand, three hundred seventy-eight".

Divisors: 1 2 3 6 9 18 27 54 127 254 381 762 1143 2286 3429 6858 9941 19882 29823 59646 89469 178938 268407 536814 1262507 2525014 3787521 7575042 11362563 22725126 34087689 68175378