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68665200 = 2435257221
BaseRepresentation
bin1000001011110…
…11111101110000
311210012112221120
410011323331300
5120034241300
610451422240
71462434042
oct405737560
9153175846
1068665200
113583a1aa
121abb4980
13112c20c6
149195a92
1560653a0
hex417bf70

68665200 has 60 divisors (see below), whose sum is σ = 219961368. Its totient is φ = 18310400.

The previous prime is 68665171. The next prime is 68665211. The reversal of 68665200 is 256686.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27411 + ... + 29810.

Almost surely, 268665200 is an apocalyptic number.

68665200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68665200 is an abundant number, since it is smaller than the sum of its proper divisors (151296168).

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

68665200 is a wasteful number, since it uses less digits than its factorization.

68665200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57242 (or 57231 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 68665200 is about 8286.4467656529. The cubic root of 68665200 is about 409.4921334106.

The spelling of 68665200 in words is "sixty-eight million, six hundred sixty-five thousand, two hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 40 48 50 60 75 80 100 120 150 200 240 300 400 600 1200 57221 114442 171663 228884 286105 343326 457768 572210 686652 858315 915536 1144420 1373304 1430525 1716630 2288840 2746608 2861050 3433260 4291575 4577680 5722100 6866520 8583150 11444200 13733040 17166300 22888400 34332600 68665200