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68380032 = 273725439
BaseRepresentation
bin1000001001101…
…10010110000000
311202200001202210
410010312112000
5120001130112
610441342120
71460135460
oct404662600
9152601683
1068380032
1135664a26
121aa97940
1311222376
14911dba0
15600ab3c
hex4136580

68380032 has 64 divisors (see below), whose sum is σ = 207590400. Its totient is φ = 19536384.

The previous prime is 68380021. The next prime is 68380061. The reversal of 68380032 is 23008386.

It is a tau number, because it is divible by the number of its divisors (64).

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, 10032 + ... + 15407.

It is an arithmetic number, because the mean of its divisors is an integer number (3243600).

Almost surely, 268380032 is an apocalyptic number.

It is an amenable number.

68380032 is an abundant number, since it is smaller than the sum of its proper divisors (139210368).

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

68380032 is a wasteful number, since it uses less digits than its factorization.

68380032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25463 (or 25451 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 68380032 is about 8269.2219706572. The cubic root of 68380032 is about 408.9244704036.

The spelling of 68380032 in words is "sixty-eight million, three hundred eighty thousand, thirty-two".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 336 384 448 672 896 1344 2688 25439 50878 76317 101756 152634 178073 203512 305268 356146 407024 534219 610536 712292 814048 1068438 1221072 1424584 1628096 2136876 2442144 2849168 3256192 4273752 4884288 5698336 8547504 9768576 11396672 17095008 22793344 34190016 68380032