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12440231210 = 2511295037753
BaseRepresentation
bin10111001010111111…
…01101110100101010
31012002222111020001002
423211133231310222
5200434144344320
65414233155002
7620165135441
oct134537556452
935088436032
1012440231210
115304205920
1224b225ba62
131233420c74
14860295d58
154cc22e675
hex2e57edd2a

12440231210 has 64 divisors (see below), whose sum is σ = 25323943680. Its totient is φ = 4358484480.

The previous prime is 12440231203. The next prime is 12440231227. The reversal of 12440231210 is 1213204421.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1600694 + ... + 1608446.

It is an arithmetic number, because the mean of its divisors is an integer number (395686620).

Almost surely, 212440231210 is an apocalyptic number.

12440231210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12440231210 is an abundant number, since it is smaller than the sum of its proper divisors (12883712470).

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

12440231210 is a wasteful number, since it uses less digits than its factorization.

12440231210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 12440231210 its reverse (1213204421), we get a palindrome (13653435631).

The spelling of 12440231210 in words is "twelve billion, four hundred forty million, two hundred thirty-one thousand, two hundred ten".

Divisors: 1 2 5 10 11 22 29 55 58 110 145 290 319 503 638 1006 1595 2515 3190 5030 5533 7753 11066 14587 15506 27665 29174 38765 55330 72935 77530 85283 145870 160457 170566 224837 320914 426415 449674 802285 852830 1124185 1604570 2248370 2473207 3899759 4946414 7799518 12366035 19498795 24732070 38997590 42897349 85794698 113093011 214486745 226186022 428973490 565465055 1130930110 1244023121 2488046242 6220115605 12440231210