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87007071 = 3176725463
BaseRepresentation
bin1010010111110…
…01111101011111
320001201102021010
411023321331133
5134233211241
612344510303
72104355634
oct513717537
9201642233
1087007071
1145127778
122517b393
1315044898
14b7ac18b
157989d16
hex52f9f5f

87007071 has 16 divisors (see below), whose sum is σ = 124671744. Its totient is φ = 53775744.

The previous prime is 87007069. The next prime is 87007073. The reversal of 87007071 is 17070078.

It is an interprime number because it is at equal distance from previous prime (87007069) and next prime (87007073).

It is not a de Polignac number, because 87007071 - 21 = 87007069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87007073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9315 + ... + 16148.

It is an arithmetic number, because the mean of its divisors is an integer number (7791984).

Almost surely, 287007071 is an apocalyptic number.

87007071 is a deficient number, since it is larger than the sum of its proper divisors (37664673).

87007071 is a wasteful number, since it uses less digits than its factorization.

87007071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25550.

The product of its (nonzero) digits is 2744, while the sum is 30.

The square root of 87007071 is about 9327.7580907740. The cubic root of 87007071 is about 443.1167664180.

The spelling of 87007071 in words is "eighty-seven million, seven thousand, seventy-one".

Divisors: 1 3 17 51 67 201 1139 3417 25463 76389 432871 1298613 1706021 5118063 29002357 87007071