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86487568872 = 23328312733741
BaseRepresentation
bin101000010001100001…
…1111001000111101000
322021020110121201102120
41100203003321013220
52404111304200442
6103422024431240
76151146130365
oct1204303710750
9267213551376
1086487568872
1133751a83651
1214918618520
138204222673
14428662546c
1523b2d164ec
hex14230f91e8

86487568872 has 32 divisors (see below), whose sum is σ = 216982963680. Its totient is φ = 28727317440.

The previous prime is 86487568861. The next prime is 86487568877. The reversal of 86487568872 is 27886578468.

It is a junction number, because it is equal to n+sod(n) for n = 86487568797 and 86487568806.

It is not an unprimeable number, because it can be changed into a prime (86487568877) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6360079 + ... + 6373662.

It is an arithmetic number, because the mean of its divisors is an integer number (6780717615).

Almost surely, 286487568872 is an apocalyptic number.

It is an amenable number.

86487568872 is an abundant number, since it is smaller than the sum of its proper divisors (130495394808).

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

86487568872 is a wasteful number, since it uses less digits than its factorization.

86487568872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12734033 (or 12734029 counting only the distinct ones).

The product of its digits is 289013760, while the sum is 69.

The spelling of 86487568872 in words is "eighty-six billion, four hundred eighty-seven million, five hundred sixty-eight thousand, eight hundred seventy-two".

Divisors: 1 2 3 4 6 8 12 24 283 566 849 1132 1698 2264 3396 6792 12733741 25467482 38201223 50934964 76402446 101869928 152804892 305609784 3603648703 7207297406 10810946109 14414594812 21621892218 28829189624 43243784436 86487568872