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87130050 = 2352782981
BaseRepresentation
bin1010011000101…
…11111111000010
320001221122221220
411030113333002
5134301130200
612351255510
72105410320
oct514277702
9201848856
1087130050
1145201107
122521a596
1315088857
14b800d10
1579b14a0
hex5317fc2

87130050 has 48 divisors (see below), whose sum is σ = 246954432. Its totient is φ = 19915200.

The previous prime is 87130037. The next prime is 87130081. The reversal of 87130050 is 5003178.

It is a super-2 number, since 2×871300502 = 15183291226005000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 87130050.

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, 40441 + ... + 42540.

It is an arithmetic number, because the mean of its divisors is an integer number (5144884).

Almost surely, 287130050 is an apocalyptic number.

87130050 is an abundant number, since it is smaller than the sum of its proper divisors (159824382).

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

87130050 is a wasteful number, since it uses less digits than its factorization.

87130050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83003 (or 82998 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 87130050 is about 9334.3478615273. The cubic root of 87130050 is about 443.3254406545.

The spelling of 87130050 in words is "eighty-seven million, one hundred thirty thousand, fifty".

Divisors: 1 2 3 5 6 7 10 14 15 21 25 30 35 42 50 70 75 105 150 175 210 350 525 1050 82981 165962 248943 414905 497886 580867 829810 1161734 1244715 1742601 2074525 2489430 2904335 3485202 4149050 5808670 6223575 8713005 12447150 14521675 17426010 29043350 43565025 87130050