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87507168 = 25371071217
BaseRepresentation
bin1010011011101…
…00000011100000
320002122211021020
411031310003200
5134400212133
612403325440
72111540640
oct515640340
9202584236
1087507168
1145439481
1225380880
131518b3b8
14b89c520
157a380b3
hex53740e0

87507168 has 96 divisors (see below), whose sum is σ = 265192704. Its totient is φ = 24748032.

The previous prime is 87507163. The next prime is 87507169. The reversal of 87507168 is 86170578.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87507163) by changing a digit.

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, 71296 + ... + 72512.

It is an arithmetic number, because the mean of its divisors is an integer number (2762424).

Almost surely, 287507168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87507168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132596352).

87507168 is an abundant number, since it is smaller than the sum of its proper divisors (177685536).

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

87507168 is a wasteful number, since it uses less digits than its factorization.

87507168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 87507168 is about 9354.5266048048. The cubic root of 87507168 is about 443.9641233896.

The spelling of 87507168 in words is "eighty-seven million, five hundred seven thousand, one hundred sixty-eight".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 107 112 168 214 224 321 336 428 642 672 749 856 1217 1284 1498 1712 2247 2434 2568 2996 3424 3651 4494 4868 5136 5992 7302 8519 8988 9736 10272 11984 14604 17038 17976 19472 23968 25557 29208 34076 35952 38944 51114 58416 68152 71904 102228 116832 130219 136304 204456 260438 272608 390657 408912 520876 781314 817824 911533 1041752 1562628 1823066 2083504 2734599 3125256 3646132 4167008 5469198 6250512 7292264 10938396 12501024 14584528 21876792 29169056 43753584 87507168