Base | Representation |
---|---|
bin | 101000100110110110… |
… | …1111011001000111101 |
3 | 22100002100021002022020 |
4 | 1101031231323020331 |
5 | 2412043011332034 |
6 | 104021031510353 |
7 | 6204656140641 |
oct | 1211555731075 |
9 | 270070232266 |
10 | 87203230269 |
11 | 33a89a4a651 |
12 | 14a982283b9 |
13 | 82b958644c |
14 | 43136b8c21 |
15 | 2405a7e249 |
hex | 144db7b23d |
87203230269 has 4 divisors (see below), whose sum is σ = 116270973696. Its totient is φ = 58135486844.
The previous prime is 87203230253. The next prime is 87203230363. The reversal of 87203230269 is 96203230278.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 87203230269 - 24 = 87203230253 is a prime.
It is a super-2 number, since 2×872032302692 (a number of 23 digits) contains 22 as substring.
It is a self number, because there is not a number n which added to its sum of digits gives 87203230269.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87203230069) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14533871709 + ... + 14533871714.
It is an arithmetic number, because the mean of its divisors is an integer number (29067743424).
Almost surely, 287203230269 is an apocalyptic number.
It is an amenable number.
87203230269 is a deficient number, since it is larger than the sum of its proper divisors (29067743427).
87203230269 is a wasteful number, since it uses less digits than its factorization.
87203230269 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 29067743426.
The product of its (nonzero) digits is 217728, while the sum is 42.
Subtracting 87203230269 from its reverse (96203230278), we obtain a palindrome (9000000009).
The spelling of 87203230269 in words is "eighty-seven billion, two hundred three million, two hundred thirty thousand, two hundred sixty-nine".
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