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13506630680 = 2352291474523
BaseRepresentation
bin11001001010000111…
…01101010000011000
31021212022002221002202
430211003231100120
5210130144140210
610112125545332
7655464316004
oct144503552030
937768087082
1013506630680
1158011605a4
12274b415248
131373338b7a
14921b69704
15540b799a5
hex3250ed418

13506630680 has 32 divisors (see below), whose sum is σ = 30522646800. Its totient is φ = 5379056256.

The previous prime is 13506630677. The next prime is 13506630703. The reversal of 13506630680 is 8603660531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 728102 + ... + 746421.

Almost surely, 213506630680 is an apocalyptic number.

13506630680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13506630680 is an abundant number, since it is smaller than the sum of its proper divisors (17016016120).

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

13506630680 is a wasteful number, since it uses less digits than its factorization.

13506630680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474763 (or 1474759 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 13506630680 in words is "thirteen billion, five hundred six million, six hundred thirty thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 229 458 916 1145 1832 2290 4580 9160 1474523 2949046 5898092 7372615 11796184 14745230 29490460 58980920 337665767 675331534 1350663068 1688328835 2701326136 3376657670 6753315340 13506630680