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68081108 = 2276922133
BaseRepresentation
bin1000000111011…
…01010111010100
311202002212201112
410003231113110
5114412043413
610431114152
71454452124
oct403552724
9152085645
1068081108
1135480387
121a972958
13111492a4
149082c84
155e9c2a8
hex40ed5d4

68081108 has 12 divisors (see below), whose sum is σ = 119302260. Its totient is φ = 33994752.

The previous prime is 68081089. The next prime is 68081129. The reversal of 68081108 is 80118086.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29789764 + 38291344 = 5458^2 + 6188^2 .

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 3 ways as a sum of consecutive naturals, for example, 7991 + ... + 14142.

It is an arithmetic number, because the mean of its divisors is an integer number (9941855).

Almost surely, 268081108 is an apocalyptic number.

It is an amenable number.

68081108 is a deficient number, since it is larger than the sum of its proper divisors (51221152).

68081108 is a wasteful number, since it uses less digits than its factorization.

68081108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22906 (or 22904 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 68081108 is about 8251.1276805053. The cubic root of 68081108 is about 408.3277275180.

The spelling of 68081108 in words is "sixty-eight million, eighty-one thousand, one hundred eight".

Divisors: 1 2 4 769 1538 3076 22133 44266 88532 17020277 34040554 68081108