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87389585 = 5132713171
BaseRepresentation
bin1010011010101…
…11010110010001
320002102211222022
411031113112101
5134332431320
612401021225
72110541063
oct515272621
9202384868
1087389585
11453690a8
1225324815
1315149a1a
14b86b733
157a13325
hex5357591

87389585 has 8 divisors (see below), whose sum is σ = 104954496. Its totient is φ = 69853680.

The previous prime is 87389539. The next prime is 87389593. The reversal of 87389585 is 58598378.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87389585 - 220 = 86341009 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50 + ... + 13220.

It is an arithmetic number, because the mean of its divisors is an integer number (13119312).

Almost surely, 287389585 is an apocalyptic number.

It is an amenable number.

87389585 is a deficient number, since it is larger than the sum of its proper divisors (17564911).

87389585 is a wasteful number, since it uses less digits than its factorization.

87389585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14503.

The product of its digits is 2419200, while the sum is 53.

The square root of 87389585 is about 9348.2396738637. The cubic root of 87389585 is about 443.7651833726.

The spelling of 87389585 in words is "eighty-seven million, three hundred eighty-nine thousand, five hundred eighty-five".

Divisors: 1 5 1327 6635 13171 65855 17477917 87389585