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20102232012 = 22317751713109
BaseRepresentation
bin10010101110001011…
…111011011111001100
31220212221220012012120
4102232023323133030
5312132132411022
613122420332540
71311103103262
oct225613733714
956787805176
1020102232012
118586205495
123a90244150
131b84920355
14d89ad8432
157c9c11d5c
hex4ae2fb7cc

20102232012 has 48 divisors (see below), whose sum is σ = 49674733920. Its totient is φ = 6305262592.

The previous prime is 20102231999. The next prime is 20102232037. The reversal of 20102232012 is 21023220102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20102231982 and 20102232000.

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, 1526914 + ... + 1540022.

It is an arithmetic number, because the mean of its divisors is an integer number (1034890290).

Almost surely, 220102232012 is an apocalyptic number.

It is an amenable number.

20102232012 is an abundant number, since it is smaller than the sum of its proper divisors (29572501908).

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

20102232012 is a wasteful number, since it uses less digits than its factorization.

20102232012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20650 (or 20648 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20102232012 its reverse (21023220102), we get a palindrome (41125452114).

The spelling of 20102232012 in words is "twenty billion, one hundred two million, two hundred thirty-two thousand, twelve".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 7517 13109 15034 22551 26218 30068 39327 45102 52436 78654 90204 127789 157308 222853 255578 383367 445706 511156 668559 766734 891412 1337118 1533468 2674236 98540353 197080706 295621059 394161412 591242118 1182484236 1675186001 3350372002 5025558003 6700744004 10051116006 20102232012