Base | Representation |
---|---|
bin | 1010011011100… |
… | …01010011101111 |
3 | 20002122020211121 |
4 | 11031301103233 |
5 | 134344332134 |
6 | 12403201411 |
7 | 2111463100 |
oct | 515612357 |
9 | 202566747 |
10 | 87495919 |
11 | 45430a85 |
12 | 25376267 |
13 | 15186244 |
14 | b8983a7 |
15 | 7a34ab4 |
hex | 53714ef |
87495919 has 12 divisors (see below), whose sum is σ = 105066048. Its totient is φ = 72576000.
The previous prime is 87495911. The next prime is 87495937. The reversal of 87495919 is 91959478.
It is not a de Polignac number, because 87495919 - 23 = 87495911 is a prime.
It is a super-2 number, since 2×874959192 = 15311071683309122, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87495911) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27282 + ... + 30319.
It is an arithmetic number, because the mean of its divisors is an integer number (8755504).
Almost surely, 287495919 is an apocalyptic number.
87495919 is a deficient number, since it is larger than the sum of its proper divisors (17570129).
87495919 is a wasteful number, since it uses less digits than its factorization.
87495919 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 57646 (or 57639 counting only the distinct ones).
The product of its digits is 816480, while the sum is 52.
The square root of 87495919 is about 9353.9253257656. The cubic root of 87495919 is about 443.9450987902.
The spelling of 87495919 in words is "eighty-seven million, four hundred ninety-five thousand, nine hundred nineteen".
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