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23520040830 = 232511131827509
BaseRepresentation
bin10101111001111001…
…110101011101111110
32020201011002212111100
4111321321311131332
5341132112301310
614445512033530
71461564022416
oct257171653576
966634085440
1023520040830
119a7a4a4880
1246849928a6
1322aaa40130
1411d19bd646
15929cd5ec0
hex579e7577e

23520040830 has 96 divisors (see below), whose sum is σ = 71843073120. Its totient is φ = 5263223040.

The previous prime is 23520040811. The next prime is 23520040867. The reversal of 23520040830 is 3804002532.

23520040830 is a `hidden beast` number, since 23 + 5 + 200 + 408 + 30 = 666.

It is a super-3 number, since 3×235200408303 (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23520040794 and 23520040803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 900885 + ... + 926624.

It is an arithmetic number, because the mean of its divisors is an integer number (748365345).

Almost surely, 223520040830 is an apocalyptic number.

23520040830 is an abundant number, since it is smaller than the sum of its proper divisors (48323032290).

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

23520040830 is a wasteful number, since it uses less digits than its factorization.

23520040830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827546 (or 1827543 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The spelling of 23520040830 in words is "twenty-three billion, five hundred twenty million, forty thousand, eight hundred thirty".

Divisors: 1 2 3 5 6 9 10 11 13 15 18 22 26 30 33 39 45 55 65 66 78 90 99 110 117 130 143 165 195 198 234 286 330 390 429 495 585 715 858 990 1170 1287 1430 2145 2574 4290 6435 12870 1827509 3655018 5482527 9137545 10965054 16447581 18275090 20102599 23757617 27412635 32895162 40205198 47515234 54825270 60307797 71272851 82237905 100512995 118788085 120615594 142545702 164475810 180923391 201025990 213818553 237576170 261333787 301538985 356364255 361846782 427637106 522667574 603077970 712728510 784001361 904616955 1069092765 1306668935 1568002722 1809233910 2138185530 2352004083 2613337870 3920006805 4704008166 7840013610 11760020415 23520040830