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13054221200 = 245297509661
BaseRepresentation
bin11000010100001011…
…11001101110010000
31020200202211010222002
430022011321232100
5203213340034300
65555205133132
7641332022636
oct141205715620
936622733862
1013054221200
115599849669
1226439ba1a8
1313006a7557
148bba41356
155160b25d5
hex30a179b90

13054221200 has 120 divisors (see below), whose sum is σ = 31796376360. Its totient is φ = 5149900800.

The previous prime is 13054221197. The next prime is 13054221203. The reversal of 13054221200 is 212245031.

It is an interprime number because it is at equal distance from previous prime (13054221197) and next prime (13054221203).

It can be written as a sum of positive squares in 12 ways, for example, as 700343296 + 12353877904 = 26464^2 + 111148^2 .

It is a super-2 number, since 2×130542212002 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (13054221203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19748870 + ... + 19749530.

It is an arithmetic number, because the mean of its divisors is an integer number (264969803).

Almost surely, 213054221200 is an apocalyptic number.

13054221200 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 13054221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15898188180).

13054221200 is an abundant number, since it is smaller than the sum of its proper divisors (18742155160).

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

13054221200 is a wasteful number, since it uses less digits than its factorization.

13054221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 13054221200 its reverse (212245031), we get a palindrome (13266466231).

The spelling of 13054221200 in words is "thirteen billion, fifty-four million, two hundred twenty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 97 100 194 200 388 400 485 509 661 776 970 1018 1322 1552 1940 2036 2425 2545 2644 3305 3880 4072 4850 5090 5288 6610 7760 8144 9700 10180 10576 12725 13220 16525 19400 20360 25450 26440 33050 38800 40720 49373 50900 52880 64117 66100 98746 101800 128234 132200 197492 203600 246865 256468 264400 320585 336449 394984 493730 512936 641170 672898 789968 987460 1025872 1234325 1282340 1345796 1602925 1682245 1974920 2468650 2564680 2691592 3205850 3364490 3949840 4937300 5129360 5383184 6411700 6728980 8411225 9874600 12823400 13457960 16822450 19749200 25646800 26915920 32635553 33644900 65271106 67289800 130542212 134579600 163177765 261084424 326355530 522168848 652711060 815888825 1305422120 1631777650 2610844240 3263555300 6527110600 13054221200