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30686087432 = 23711133831929
BaseRepresentation
bin11100100101000010…
…001000100100001000
32221012120021202101202
4130211002020210020
51000321114244212
622032541203332
72134300303520
oct344502104410
987176252352
1030686087432
1112017550740
125b44860548
132b80572ab0
1416b1600680
15be8e9e0c2
hex725088908

30686087432 has 64 divisors (see below), whose sum is σ = 77251708800. Its totient is φ = 11035952640.

The previous prime is 30686087417. The next prime is 30686087447. The reversal of 30686087432 is 23478068603.

It is an interprime number because it is at equal distance from previous prime (30686087417) and next prime (30686087447).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1907957 + ... + 1923972.

It is an arithmetic number, because the mean of its divisors is an integer number (1207057950).

Almost surely, 230686087432 is an apocalyptic number.

It is an amenable number.

30686087432 is an abundant number, since it is smaller than the sum of its proper divisors (46565621368).

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

30686087432 is a wasteful number, since it uses less digits than its factorization.

30686087432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3831966 (or 3831962 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 47.

The spelling of 30686087432 in words is "thirty billion, six hundred eighty-six million, eighty-seven thousand, four hundred thirty-two".

Divisors: 1 2 4 7 8 11 13 14 22 26 28 44 52 56 77 88 91 104 143 154 182 286 308 364 572 616 728 1001 1144 2002 4004 8008 3831929 7663858 15327716 26823503 30655432 42151219 49815077 53647006 84302438 99630154 107294012 168604876 199260308 214588024 295058533 337209752 348705539 398520616 547965847 590117066 697411078 1095931694 1180234132 1394822156 2191863388 2360468264 2789644312 3835760929 4383726776 7671521858 15343043716 30686087432