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12230000020 = 2257349250307
BaseRepresentation
bin10110110001111011…
…01111110110010100
31011120022220101001201
423120331233312110
5200021340000040
65341323202244
7612033166510
oct133075576624
934508811051
1012230000020
115206575037
122453976384
1311cb9c3b04
148403ad140
154b8a53a9a
hex2d8f6fd94

12230000020 has 48 divisors (see below), whose sum is σ = 29436220800. Its totient is φ = 4181111424.

The previous prime is 12229999997. The next prime is 12230000071. The reversal of 12230000020 is 2000003221.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 12229999961 and 12230000006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76294 + ... + 174013.

It is an arithmetic number, because the mean of its divisors is an integer number (613254600).

Almost surely, 212230000020 is an apocalyptic number.

12230000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12230000020 is an abundant number, since it is smaller than the sum of its proper divisors (17206220780).

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

12230000020 is a wasteful number, since it uses less digits than its factorization.

12230000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250672 (or 250670 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 12230000020 its reverse (2000003221), we get a palindrome (14230003241).

It can be divided in two parts, 12 and 230000020, that added together give a palindrome (230000032).

The spelling of 12230000020 in words is "twelve billion, two hundred thirty million, twenty", and thus it is an aban number.

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 349 698 1396 1745 2443 3490 4886 6980 9772 12215 24430 48860 250307 500614 1001228 1251535 1752149 2503070 3504298 5006140 7008596 8760745 17521490 35042980 87357143 174714286 349428572 436785715 611500001 873571430 1223000002 1747142860 2446000004 3057500005 6115000010 12230000020