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87329699387 = 72311811911663
BaseRepresentation
bin101000101010101000…
…0010111011000111011
322100102011020101022122
41101111100113120323
52412322400340022
6104041350311455
76211053124400
oct1212520273073
9270364211278
1087329699387
113404437a787
1214b1265858b
138309836a48
1443263da2a7
152411c11742
hex145541763b

87329699387 has 48 divisors (see below), whose sum is σ = 106059792384. Its totient is φ = 71618904000.

The previous prime is 87329699333. The next prime is 87329699393. The reversal of 87329699387 is 78399692378.

It is not a de Polignac number, because 87329699387 - 226 = 87262590523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87329699387.

It is not an unprimeable number, because it can be changed into a prime (87329699287) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52512518 + ... + 52514180.

It is an arithmetic number, because the mean of its divisors is an integer number (2209579008).

Almost surely, 287329699387 is an apocalyptic number.

87329699387 is a deficient number, since it is larger than the sum of its proper divisors (18730092997).

87329699387 is a wasteful number, since it uses less digits than its factorization.

87329699387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080 (or 2073 counting only the distinct ones).

The product of its digits is 246903552, while the sum is 71.

The spelling of 87329699387 in words is "eighty-seven billion, three hundred twenty-nine million, six hundred ninety-nine thousand, three hundred eighty-seven".

Divisors: 1 7 31 49 181 191 217 1267 1337 1519 1663 5611 5921 8869 9359 11641 34571 39277 41447 51553 81487 241997 274939 290129 301003 317633 360871 1071701 1693979 2107021 2223431 2526097 7501907 9331093 9846623 14749147 15564017 52513349 57491573 65317651 68926361 402441011 457223557 482484527 1782238763 2817087077 12475671341 87329699387