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87130260 = 22325769151
BaseRepresentation
bin1010011000110…
…00000010010100
320001221200020200
411030120002110
5134301132020
612351300500
72105411040
oct514300224
9201850220
1087130260
1145201288
122521a730
1315088989
14b801020
1579b1590
hex5318094

87130260 has 72 divisors (see below), whose sum is σ = 302055936. Its totient is φ = 19915200.

The previous prime is 87130259. The next prime is 87130273. The reversal of 87130260 is 6203178.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33316 + ... + 35835.

Almost surely, 287130260 is an apocalyptic number.

It is an amenable number.

87130260 is an abundant number, since it is smaller than the sum of its proper divisors (214925676).

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

87130260 is a wasteful number, since it uses less digits than its factorization.

87130260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69173 (or 69168 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 87130260 is about 9334.3591102978. The cubic root of 87130260 is about 443.3257968204.

The spelling of 87130260 in words is "eighty-seven million, one hundred thirty thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1260 69151 138302 207453 276604 345755 414906 484057 622359 691510 829812 968114 1037265 1244718 1383020 1452171 1936228 2074530 2420285 2489436 2904342 3111795 4149060 4356513 4840570 5808684 6223590 7260855 8713026 9681140 12447180 14521710 17426052 21782565 29043420 43565130 87130260