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87028275 = 3522940013
BaseRepresentation
bin1010010111111…
…11001000110011
320001202111100110
411023333020303
5134234401100
612345152403
72104504515
oct513771063
9201674313
1087028275
11451416a4
122518b703
1315051429
14b7b5bb5
157991250
hex52ff233

87028275 has 24 divisors (see below), whose sum is σ = 148852080. Its totient is φ = 44813440.

The previous prime is 87028241. The next prime is 87028283. The reversal of 87028275 is 57282078.

It is not a de Polignac number, because 87028275 - 26 = 87028211 is a prime.

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, 17832 + ... + 22181.

It is an arithmetic number, because the mean of its divisors is an integer number (6202170).

Almost surely, 287028275 is an apocalyptic number.

87028275 is a deficient number, since it is larger than the sum of its proper divisors (61823805).

87028275 is a wasteful number, since it uses less digits than its factorization.

87028275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40055 (or 40050 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 39.

The square root of 87028275 is about 9328.8946290544. The cubic root of 87028275 is about 443.1527599859.

The spelling of 87028275 in words is "eighty-seven million, twenty-eight thousand, two hundred seventy-five".

Divisors: 1 3 5 15 25 29 75 87 145 435 725 2175 40013 120039 200065 600195 1000325 1160377 3000975 3481131 5801885 17405655 29009425 87028275