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207028080 = 24325741077
BaseRepresentation
bin11000101011011…
…11111101110000
3112102120010010200
430111233331300
5410444344310
632313155200
75062465260
oct1425577560
9472503120
10207028080
11a6953296
12593bbb00
1333b7822c
141d6d17a0
15132969c0
hexc56ff70

207028080 has 120 divisors (see below), whose sum is σ = 794612832. Its totient is φ = 47319552.

The previous prime is 207028079. The next prime is 207028153. The reversal of 207028080 is 80820702.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15499 + ... + 25578.

Almost surely, 2207028080 is an apocalyptic number.

207028080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207028080 is an abundant number, since it is smaller than the sum of its proper divisors (587584752).

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

207028080 is a wasteful number, since it uses less digits than its factorization.

207028080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41103 (or 41094 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 207028080 is about 14388.4703843042. The cubic root of 207028080 is about 591.5749170258.

Adding to 207028080 its reverse (80820702), we get a palindrome (287848782).

It can be divided in two parts, 20702 and 8080, that added together give a palindrome (28782).

The spelling of 207028080 in words is "two hundred seven million, twenty-eight thousand, eighty".

Divisors: 1 2 3 4 5 6 7 8 9 10 12 14 15 16 18 20 21 24 28 30 35 36 40 42 45 48 56 60 63 70 72 80 84 90 105 112 120 126 140 144 168 180 210 240 252 280 315 336 360 420 504 560 630 720 840 1008 1260 1680 2520 5040 41077 82154 123231 164308 205385 246462 287539 328616 369693 410770 492924 575078 616155 657232 739386 821540 862617 985848 1150156 1232310 1437695 1478772 1643080 1725234 1848465 1971696 2300312 2464620 2587851 2875390 2957544 3286160 3450468 3696930 4313085 4600624 4929240 5175702 5750780 5915088 6900936 7393860 8626170 9858480 10351404 11501560 12939255 13801872 14787720 17252340 20702808 23003120 25878510 29575440 34504680 41405616 51757020 69009360 103514040 207028080