Base | Representation |
---|---|
bin | 101000100100011011… |
… | …0000010011101000100 |
3 | 22022212122102022002021 |
4 | 1101020312002131010 |
5 | 2411411044040200 |
6 | 104004551252524 |
7 | 6202644200413 |
oct | 1211066023504 |
9 | 268778368067 |
10 | 87121471300 |
11 | 33a47887956 |
12 | 14a7497a144 |
13 | 82a565b566 |
14 | 43068b547a |
15 | 23ed7ce41a |
hex | 1448d82744 |
87121471300 has 18 divisors (see below), whose sum is σ = 189053592938. Its totient is φ = 34848588480.
The previous prime is 87121471279. The next prime is 87121471331. The reversal of 87121471300 is 317412178.
It can be written as a sum of positive squares in 3 ways, for example, as 2524258564 + 84597212736 = 50242^2 + 290856^2 .
It is a super-2 number, since 2×871214713002 (a number of 23 digits) contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 435607257 + ... + 435607456.
Almost surely, 287121471300 is an apocalyptic number.
It is an amenable number.
87121471300 is an abundant number, since it is smaller than the sum of its proper divisors (101932121638).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87121471300 is a wasteful number, since it uses less digits than its factorization.
87121471300 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 871214727 (or 871214720 counting only the distinct ones).
The product of its (nonzero) digits is 9408, while the sum is 34.
Adding to 87121471300 its reverse (317412178), we get a palindrome (87438883478).
The spelling of 87121471300 in words is "eighty-seven billion, one hundred twenty-one million, four hundred seventy-one thousand, three hundred".
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