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68005968 = 2438915919
BaseRepresentation
bin1000000110110…
…11000001010000
311201222001122120
410003123001100
5114402142333
610425334240
71454020062
oct403330120
9151861576
1068005968
1135429988
121a937380
1311121024
149063732
155e84db3
hex40db050

68005968 has 40 divisors (see below), whose sum is σ = 177667200. Its totient is φ = 22412544.

The previous prime is 68005939. The next prime is 68005979. The reversal of 68005968 is 86950086.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3688 + ... + 12231.

It is an arithmetic number, because the mean of its divisors is an integer number (4441680).

Almost surely, 268005968 is an apocalyptic number.

It is an amenable number.

68005968 is an abundant number, since it is smaller than the sum of its proper divisors (109661232).

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

68005968 is a wasteful number, since it uses less digits than its factorization.

68005968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16019 (or 16013 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 68005968 is about 8246.5731064485. The cubic root of 68005968 is about 408.1774506844.

The spelling of 68005968 in words is "sixty-eight million, five thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 89 178 267 356 534 712 1068 1424 2136 4272 15919 31838 47757 63676 95514 127352 191028 254704 382056 764112 1416791 2833582 4250373 5667164 8500746 11334328 17001492 22668656 34002984 68005968