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12838709884 = 22711133206471
BaseRepresentation
bin10111111010011111…
…10010101001111100
31020010202022001000111
423331033302221330
5202243202204014
65521550035404
7633104143030
oct137517625174
936122261014
1012838709884
115499131840
1225a37a8b64
131297b4bc70
1489b1821c0
155021e22c4
hex2fd3f2a7c

12838709884 has 48 divisors (see below), whose sum is σ = 30166488576. Its totient is φ = 4617316800.

The previous prime is 12838709867. The next prime is 12838709921. The reversal of 12838709884 is 48890783821.

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, 1599232 + ... + 1607239.

It is an arithmetic number, because the mean of its divisors is an integer number (628468512).

Almost surely, 212838709884 is an apocalyptic number.

12838709884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12838709884 is an abundant number, since it is smaller than the sum of its proper divisors (17327778692).

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

12838709884 is a wasteful number, since it uses less digits than its factorization.

12838709884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3206506 (or 3206504 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 12838709884 in words is "twelve billion, eight hundred thirty-eight million, seven hundred nine thousand, eight hundred eighty-four".

Divisors: 1 2 4 7 11 13 14 22 26 28 44 52 77 91 143 154 182 286 308 364 572 1001 2002 4004 3206471 6412942 12825884 22445297 35271181 41684123 44890594 70542362 83368246 89781188 141084724 166736492 246898267 291788861 458525353 493796534 583577722 917050706 987593068 1167155444 1834101412 3209677471 6419354942 12838709884