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10801909080 = 2332531231223
BaseRepresentation
bin10100000111101100…
…00000110101011000
31000212210200211120200
422003312000311120
5134110242042310
64543510222200
7531452466204
oct120366006530
930783624520
1010801909080
11464343a196
122115654960
131031b8b2a1
14746867b04
154334b09c0
hex283d80d58

10801909080 has 144 divisors (see below), whose sum is σ = 36276355440. Its totient is φ = 2787500160.

The previous prime is 10801909073. The next prime is 10801909081. The reversal of 10801909080 is 8090910801.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10801909081) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 330349 + ... + 361571.

It is an arithmetic number, because the mean of its divisors is an integer number (251919135).

Almost surely, 210801909080 is an apocalyptic number.

10801909080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10801909080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18138177720).

10801909080 is an abundant number, since it is smaller than the sum of its proper divisors (25474446360).

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

10801909080 is a wasteful number, since it uses less digits than its factorization.

10801909080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31302 (or 31264 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 10801909080 in words is "ten billion, eight hundred one million, nine hundred nine thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 18 20 24 30 31 36 40 45 60 62 72 90 93 120 124 155 180 186 248 279 310 360 372 465 558 620 744 930 961 1116 1240 1395 1860 1922 2232 2790 2883 3720 3844 4805 5580 5766 7688 8649 9610 11160 11532 14415 17298 19220 23064 28830 31223 34596 38440 43245 57660 62446 69192 86490 93669 115320 124892 156115 172980 187338 249784 281007 312230 345960 374676 468345 562014 624460 749352 936690 967913 1124028 1248920 1405035 1873380 1935826 2248056 2810070 2903739 3746760 3871652 4839565 5620140 5807478 7743304 8711217 9679130 11240280 11614956 14518695 17422434 19358260 23229912 29037390 30005303 34844868 38716520 43556085 58074780 60010606 69689736 87112170 90015909 116149560 120021212 150026515 174224340 180031818 240042424 270047727 300053030 348448680 360063636 450079545 540095454 600106060 720127272 900159090 1080190908 1200212120 1350238635 1800318180 2160381816 2700477270 3600636360 5400954540 10801909080