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13230200020 = 22517140927617
BaseRepresentation
bin11000101001001010…
…01101010011010100
31021011000221210112011
430110211031103110
5204043412400040
610024453034004
7645566562502
oct142445152324
937130853464
1013230200020
11567a115104
122692925904
13132aca102b
148d716d672
155267743ea
hex31494d4d4

13230200020 has 48 divisors (see below), whose sum is σ = 29439683280. Its totient is φ = 4977065984.

The previous prime is 13230199963. The next prime is 13230200021. The reversal of 13230200020 is 2000203231.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4709802384 + 8520397636 = 68628^2 + 92306^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13230200021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465252 + ... + 492868.

It is an arithmetic number, because the mean of its divisors is an integer number (613326735).

Almost surely, 213230200020 is an apocalyptic number.

13230200020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13230200020 is an abundant number, since it is smaller than the sum of its proper divisors (16209483260).

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

13230200020 is a wasteful number, since it uses less digits than its factorization.

13230200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29052 (or 29050 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 13230200020 its reverse (2000203231), we get a palindrome (15230403251).

The spelling of 13230200020 in words is "thirteen billion, two hundred thirty million, two hundred thousand, twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 1409 2818 5636 7045 14090 23953 27617 28180 47906 55234 95812 110468 119765 138085 239530 276170 469489 479060 552340 938978 1877956 2347445 4694890 9389780 38912353 77824706 155649412 194561765 389123530 661510001 778247060 1323020002 2646040004 3307550005 6615100010 13230200020