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68418882 = 23272323609
BaseRepresentation
bin1000001001111…
…11110101000010
311202202001001200
410010333311002
5120003401012
610442242030
71460356650
oct404776502
9152661050
1068418882
1135691134
121aab6316
1311236c5c
14912ddd0
1560173dc
hex413fd42

68418882 has 48 divisors (see below), whose sum is σ = 176791680. Its totient is φ = 18697536.

The previous prime is 68418871. The next prime is 68418907. The reversal of 68418882 is 28881486.

It is a happy number.

It is a super-2 number, since 2×684188822 = 9362286828259848, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 8907 + ... + 14702.

It is an arithmetic number, because the mean of its divisors is an integer number (3683160).

Almost surely, 268418882 is an apocalyptic number.

68418882 is an abundant number, since it is smaller than the sum of its proper divisors (108372798).

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

68418882 is a wasteful number, since it uses less digits than its factorization.

68418882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23647 (or 23644 counting only the distinct ones).

The product of its digits is 196608, while the sum is 45.

The square root of 68418882 is about 8271.5707093635. The cubic root of 68418882 is about 409.0018989915.

The spelling of 68418882 in words is "sixty-eight million, four hundred eighteen thousand, eight hundred eighty-two".

Divisors: 1 2 3 6 7 9 14 18 21 23 42 46 63 69 126 138 161 207 322 414 483 966 1449 2898 23609 47218 70827 141654 165263 212481 330526 424962 495789 543007 991578 1086014 1487367 1629021 2974734 3258042 3801049 4887063 7602098 9774126 11403147 22806294 34209441 68418882