Base | Representation |
---|---|
bin | 10111010100100000… |
… | …01011101010101110 |
3 | 1012022112200012021220 |
4 | 23222100023222232 |
5 | 201120112421410 |
6 | 5430204004210 |
7 | 622154425410 |
oct | 135220135256 |
9 | 35275605256 |
10 | 12520045230 |
11 | 534526a320 |
12 | 2514b30666 |
13 | 1246b177b4 |
14 | 86ab109b0 |
15 | 4d4248070 |
hex | 2ea40baae |
12520045230 has 64 divisors (see below), whose sum is σ = 37462583808. Its totient is φ = 2601567360.
The previous prime is 12520045217. The next prime is 12520045253. The reversal of 12520045230 is 3254002521.
12520045230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a super-2 number, since 2×125200452302 (a number of 21 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 12520045230.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2707657 + ... + 2712276.
It is an arithmetic number, because the mean of its divisors is an integer number (585352872).
Almost surely, 212520045230 is an apocalyptic number.
12520045230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12520045230 is an abundant number, since it is smaller than the sum of its proper divisors (24942538578).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12520045230 is a wasteful number, since it uses less digits than its factorization.
12520045230 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5419961.
The product of its (nonzero) digits is 2400, while the sum is 24.
Adding to 12520045230 its reverse (3254002521), we get a palindrome (15774047751).
The spelling of 12520045230 in words is "twelve billion, five hundred twenty million, forty-five thousand, two hundred thirty".
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