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68279108 = 2229220297
BaseRepresentation
bin1000001000111…
…01101101000100
311202110221022212
410010131231010
5114434412413
610435242552
71456235312
oct404355504
9152427285
1068279108
11355a6117
121aa49458
13111b8451
1490d50b2
155edaca8
hex411db44

68279108 has 18 divisors (see below), whose sum is σ = 123756906. Its totient is φ = 32960704.

The previous prime is 68279093. The next prime is 68279149. The reversal of 68279108 is 80197286.

It can be written as a sum of positive squares in 3 ways, for example, as 10640644 + 57638464 = 3262^2 + 7592^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6785 + ... + 13512.

Almost surely, 268279108 is an apocalyptic number.

It is an amenable number.

68279108 is a deficient number, since it is larger than the sum of its proper divisors (55477798).

68279108 is a wasteful number, since it uses less digits than its factorization.

68279108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20359 (or 20328 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 68279108 is about 8263.1173294345. The cubic root of 68279108 is about 408.7231903286.

The spelling of 68279108 in words is "sixty-eight million, two hundred seventy-nine thousand, one hundred eight".

Divisors: 1 2 4 29 58 116 841 1682 3364 20297 40594 81188 588613 1177226 2354452 17069777 34139554 68279108