Search a number
-
+
87002075 = 526735171
BaseRepresentation
bin1010010111110…
…00101111011011
320001201011102002
411023320233123
5134233031300
612344431215
72104335236
oct513705733
9201634362
1087002075
1145123a46
122517850b
1315042524
14b7aa41d
1579885d5
hex52f8bdb

87002075 has 12 divisors (see below), whose sum is σ = 108063768. Its totient is φ = 69484800.

The previous prime is 87002033. The next prime is 87002087. The reversal of 87002075 is 57020078.

It is not a de Polignac number, because 87002075 - 28 = 87001819 is a prime.

It is a super-2 number, since 2×870020752 = 15138722108611250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14240 + ... + 19410.

It is an arithmetic number, because the mean of its divisors is an integer number (9005314).

Almost surely, 287002075 is an apocalyptic number.

87002075 is a deficient number, since it is larger than the sum of its proper divisors (21061693).

87002075 is a wasteful number, since it uses less digits than its factorization.

87002075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5854 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 87002075 is about 9327.4902841011. The cubic root of 87002075 is about 443.1082849091.

The spelling of 87002075 in words is "eighty-seven million, two thousand, seventy-five".

Divisors: 1 5 25 673 3365 5171 16825 25855 129275 3480083 17400415 87002075