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12143030660 = 2252113287341
BaseRepresentation
bin10110100111100011…
…11111000110000100
31011100021020212112022
423103301333012010
5144332103440120
65324535142312
7606626025515
oct132361770604
934307225468
1012143030660
115171473732
12242a814998
1311b6993457
14832a10a0c
154b10c5025
hex2d3c7f184

12143030660 has 24 divisors (see below), whose sum is σ = 25512521496. Its totient is φ = 4854896640.

The previous prime is 12143030633. The next prime is 12143030681. The reversal of 12143030660 is 6603034121.

It can be written as a sum of positive squares in 4 ways, for example, as 596238724 + 11546791936 = 24418^2 + 107456^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101411 + ... + 185930.

It is an arithmetic number, because the mean of its divisors is an integer number (1063021729).

Almost surely, 212143030660 is an apocalyptic number.

12143030660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12143030660 is an abundant number, since it is smaller than the sum of its proper divisors (13369490836).

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

12143030660 is a wasteful number, since it uses less digits than its factorization.

12143030660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289463 (or 289461 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12143030660 its reverse (6603034121), we get a palindrome (18746064781).

The spelling of 12143030660 in words is "twelve billion, one hundred forty-three million, thirty thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 2113 4226 8452 10565 21130 42260 287341 574682 1149364 1436705 2873410 5746820 607151533 1214303066 2428606132 3035757665 6071515330 12143030660