Base | Representation |
---|---|
bin | 10111110000000101… |
… | …00001101001000000 |
3 | 1012220122220111121222 |
4 | 23320002201221000 |
5 | 202103321034430 |
6 | 5505145334212 |
7 | 630663440363 |
oct | 137002415100 |
9 | 35818814558 |
10 | 12751346240 |
11 | 5453891186 |
12 | 257a497368 |
13 | 1282a10cb9 |
14 | 88d7200da |
15 | 4e96d69e5 |
hex | 2f80a1a40 |
12751346240 has 56 divisors (see below), whose sum is σ = 30585884472. Its totient is φ = 5063290880.
The previous prime is 12751346203. The next prime is 12751346249. The reversal of 12751346240 is 4264315721.
It can be written as a sum of positive squares in 4 ways, for example, as 20286016 + 12731060224 = 4504^2 + 112832^2 .
It is a self number, because there is not a number n which added to its sum of digits gives 12751346240.
It is not an unprimeable number, because it can be changed into a prime (12751346249) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101591 + ... + 189270.
Almost surely, 212751346240 is an apocalyptic number.
12751346240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
12751346240 is an abundant number, since it is smaller than the sum of its proper divisors (17834538232).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12751346240 is a wasteful number, since it uses less digits than its factorization.
12751346240 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 291015 (or 291005 counting only the distinct ones).
The product of its (nonzero) digits is 40320, while the sum is 35.
The spelling of 12751346240 in words is "twelve billion, seven hundred fifty-one million, three hundred forty-six thousand, two hundred forty".
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