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13223001200 = 2452179720047
BaseRepresentation
bin11000101000010011…
…01111110001110000
31021010112102001121012
430110021233301300
5204040042014300
610024034450052
7645451440623
oct142411576160
937115361535
1013223001200
115676048572
122690433928
131329650486
148d6217dba
15525d01435
hex31426fc70

13223001200 has 120 divisors (see below), whose sum is σ = 33985449792. Its totient is φ = 4926504960.

The previous prime is 13223001193. The next prime is 13223001223. The reversal of 13223001200 is 210032231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 649577 + ... + 669623.

Almost surely, 213223001200 is an apocalyptic number.

13223001200 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 13223001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16992724896).

13223001200 is an abundant number, since it is smaller than the sum of its proper divisors (20762448592).

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

13223001200 is a wasteful number, since it uses less digits than its factorization.

13223001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20179 (or 20168 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 13223001200 its reverse (210032231), we get a palindrome (13433033431).

The spelling of 13223001200 in words is "thirteen billion, two hundred twenty-three million, one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 17 20 25 34 40 50 68 80 85 97 100 136 170 194 200 272 340 388 400 425 485 680 776 850 970 1360 1552 1649 1700 1940 2425 3298 3400 3880 4850 6596 6800 7760 8245 9700 13192 16490 19400 20047 26384 32980 38800 40094 41225 65960 80188 82450 100235 131920 160376 164900 200470 320752 329800 340799 400940 501175 659600 681598 801880 1002350 1363196 1603760 1703995 1944559 2004700 2726392 3407990 3889118 4009400 5452784 6815980 7778236 8018800 8519975 9722795 13631960 15556472 17039950 19445590 27263920 31112944 33057503 34079900 38891180 48613975 66115006 68159800 77782360 97227950 132230012 136319600 155564720 165287515 194455900 264460024 330575030 388911800 528920048 661150060 777823600 826437575 1322300120 1652875150 2644600240 3305750300 6611500600 13223001200