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68406876 = 22332327539
BaseRepresentation
bin1000001001111…
…00111001011100
311202201102121000
410010330321130
5120003010001
610442110300
71460306646
oct404747134
9152642530
1068406876
113568310a
121aaab390
1311231655
149129896
156013a86
hex413ce5c

68406876 has 48 divisors (see below), whose sum is σ = 185068800. Its totient is φ = 21810096.

The previous prime is 68406869. The next prime is 68406881. The reversal of 68406876 is 67860486.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 11286 + ... + 16253.

It is an arithmetic number, because the mean of its divisors is an integer number (3855600).

Almost surely, 268406876 is an apocalyptic number.

It is an amenable number.

68406876 is an abundant number, since it is smaller than the sum of its proper divisors (116661924).

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

68406876 is a wasteful number, since it uses less digits than its factorization.

68406876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27575 (or 27567 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 68406876 is about 8270.8449386988. The cubic root of 68406876 is about 408.9779739973.

The spelling of 68406876 in words is "sixty-eight million, four hundred six thousand, eight hundred seventy-six".

Divisors: 1 2 3 4 6 9 12 18 23 27 36 46 54 69 92 108 138 207 276 414 621 828 1242 2484 27539 55078 82617 110156 165234 247851 330468 495702 633397 743553 991404 1266794 1487106 1900191 2533588 2974212 3800382 5700573 7600764 11401146 17101719 22802292 34203438 68406876