Base | Representation |
---|---|
bin | 101110010001… |
… | …110000100000 |
3 | 211211100002122 |
4 | 232101300200 |
5 | 11101200420 |
6 | 1112003412 |
7 | 205054253 |
oct | 56216040 |
9 | 24740078 |
10 | 12131360 |
11 | 693651a |
12 | 4090568 |
13 | 2689a27 |
14 | 187b09a |
15 | 10e9725 |
hex | b91c20 |
12131360 has 24 divisors (see below), whose sum is σ = 28660716. Its totient is φ = 4852480.
The previous prime is 12131347. The next prime is 12131369. The reversal of 12131360 is 6313121.
It can be written as a sum of positive squares in 2 ways, for example, as 11262736 + 868624 = 3356^2 + 932^2 .
It is not an unprimeable number, because it can be changed into a prime (12131369) 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, 37751 + ... + 38070.
Almost surely, 212131360 is an apocalyptic number.
12131360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12131360 is an abundant number, since it is smaller than the sum of its proper divisors (16529356).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12131360 is an equidigital number, since it uses as much as digits as its factorization.
12131360 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 75836 (or 75828 counting only the distinct ones).
The product of its (nonzero) digits is 108, while the sum is 17.
The square root of 12131360 is about 3483.0101923480. The cubic root of 12131360 is about 229.7752056960.
Adding to 12131360 its reverse (6313121), we get a palindrome (18444481).
The spelling of 12131360 in words is "twelve million, one hundred thirty-one thousand, three hundred sixty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.077 sec. • engine limits •