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13871579428 = 2277366110267
BaseRepresentation
bin11001110101100111…
…11000000100100100
31022210201211020200001
430322303320010210
5211402111020203
610212244031044
71000515323350
oct147263700444
938721736601
1013871579428
115979165a33
122831692484
131400b27285
14958408460
15562c1791d
hex33acf8124

13871579428 has 48 divisors (see below), whose sum is σ = 28168491904. Its totient is φ = 5854083840.

The previous prime is 13871579419. The next prime is 13871579459. The reversal of 13871579428 is 82497517831.

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, 1345951 + ... + 1356217.

Almost surely, 213871579428 is an apocalyptic number.

It is an amenable number.

13871579428 is an abundant number, since it is smaller than the sum of its proper divisors (14296912476).

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

13871579428 is a wasteful number, since it uses less digits than its factorization.

13871579428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11012 (or 11010 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 55.

The spelling of 13871579428 in words is "thirteen billion, eight hundred seventy-one million, five hundred seventy-nine thousand, four hundred twenty-eight".

Divisors: 1 2 4 7 14 28 73 146 292 511 661 1022 1322 2044 2644 4627 9254 10267 18508 20534 41068 48253 71869 96506 143738 193012 287476 337771 675542 749491 1351084 1498982 2997964 5246437 6786487 10492874 13572974 20985748 27145948 47505409 95010818 190021636 495413551 990827102 1981654204 3467894857 6935789714 13871579428