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13008623488 = 27731811637
BaseRepresentation
bin11000001110101111…
…11101011110000000
31020120121000112122221
430013113331132000
5203120201422423
65550455540424
7640236322000
oct140727753600
936517015587
1013008623488
115576035403
12263068a714
1312c4100b63
148b5972000
155120a6e5d
hex3075fd780

13008623488 has 128 divisors (see below), whose sum is σ = 30407832000. Its totient is φ = 5540935680.

The previous prime is 13008623471. The next prime is 13008623491. The reversal of 13008623488 is 88432680031.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×130086234882 (a number of 21 digits) contains 22 as substring.

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, 7945806 + ... + 7947442.

Almost surely, 213008623488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13008623488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15203916000).

13008623488 is an abundant number, since it is smaller than the sum of its proper divisors (17399208512).

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

13008623488 is an equidigital number, since it uses as much as digits as its factorization.

13008623488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853 (or 1827 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 13008623488 in words is "thirteen billion, eight million, six hundred twenty-three thousand, four hundred eighty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 49 56 64 98 112 128 181 196 224 343 362 392 448 686 724 784 896 1267 1372 1448 1568 1637 2534 2744 2896 3136 3274 5068 5488 5792 6272 6548 8869 10136 10976 11459 11584 13096 17738 20272 21952 22918 23168 26192 35476 40544 43904 45836 52384 62083 70952 80213 81088 91672 104768 124166 141904 160426 162176 183344 209536 248332 283808 296297 320852 366688 496664 561491 567616 592594 641704 733376 993328 1122982 1135232 1185188 1283408 1466752 1986656 2074079 2245964 2370376 2566816 3973312 4148158 4491928 4740752 5133632 7946624 8296316 8983856 9481504 10267264 14518553 16592632 17967712 18963008 29037106 33185264 35935424 37926016 58074212 66370528 71870848 101629871 116148424 132741056 203259742 232296848 265482112 406519484 464593696 813038968 929187392 1626077936 1858374784 3252155872 6504311744 13008623488