Base | Representation |
---|---|
bin | 1010011000100… |
… | …01101000101011 |
3 | 20001220100021200 |
4 | 11030101220223 |
5 | 134244312133 |
6 | 12350535243 |
7 | 2105241435 |
oct | 514215053 |
9 | 201810250 |
10 | 87104043 |
11 | 45193614 |
12 | 25207523 |
13 | 15079a70 |
14 | b7d5655 |
15 | 79a8913 |
hex | 5311a2b |
87104043 has 24 divisors (see below), whose sum is σ = 136128720. Its totient is φ = 53352000.
The previous prime is 87104009. The next prime is 87104047. The reversal of 87104043 is 34040178.
It is not a de Polignac number, because 87104043 - 26 = 87103979 is a prime.
It is a super-2 number, since 2×871040432 = 15174228613891698, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 87103998 and 87104016.
It is not an unprimeable number, because it can be changed into a prime (87104047) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25168 + ... + 28418.
It is an arithmetic number, because the mean of its divisors is an integer number (5672030).
Almost surely, 287104043 is an apocalyptic number.
87104043 is a deficient number, since it is larger than the sum of its proper divisors (49024677).
87104043 is a wasteful number, since it uses less digits than its factorization.
87104043 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3499 (or 3496 counting only the distinct ones).
The product of its (nonzero) digits is 2688, while the sum is 27.
The square root of 87104043 is about 9332.9546768427. The cubic root of 87104043 is about 443.2813276224.
The spelling of 87104043 in words is "eighty-seven million, one hundred four thousand, forty-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.073 sec. • engine limits •