Base | Representation |
---|---|
bin | 10111110100011101… |
… | …01101110111000010 |
3 | 1020000020001121102212 |
4 | 23322032231313002 |
5 | 202142223041300 |
6 | 5512541142122 |
7 | 631621012013 |
oct | 137216556702 |
9 | 36006047385 |
10 | 12788096450 |
11 | 5472602158 |
12 | 258a85a942 |
13 | 128a50a59c |
14 | 89456900a |
15 | 4eca45935 |
hex | 2fa3addc2 |
12788096450 has 12 divisors (see below), whose sum is σ = 23785859490. Its totient is φ = 5115238560.
The previous prime is 12788096441. The next prime is 12788096459. The reversal of 12788096450 is 5469088721.
It is an interprime number because it is at equal distance from previous prime (12788096441) and next prime (12788096459).
It can be written as a sum of positive squares in 3 ways, for example, as 9791300401 + 2996796049 = 98951^2 + 54743^2 .
It is a super-3 number, since 3×127880964503 (a number of 31 digits) contains 333 as substring.
It is a Harshad number since it is a multiple of its sum of digits (50), and also a Moran number because the ratio is a prime number: 255761929 = 12788096450 / (1 + 2 + 7 + 8 + 8 + 0 + 9 + 6 + 4 + 5 + 0).
It is not an unprimeable number, because it can be changed into a prime (12788096459) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127880915 + ... + 127881014.
Almost surely, 212788096450 is an apocalyptic number.
12788096450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
12788096450 is a deficient number, since it is larger than the sum of its proper divisors (10997763040).
12788096450 is a wasteful number, since it uses less digits than its factorization.
12788096450 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 255761941 (or 255761936 counting only the distinct ones).
The product of its (nonzero) digits is 967680, while the sum is 50.
The spelling of 12788096450 in words is "twelve billion, seven hundred eighty-eight million, ninety-six thousand, four hundred fifty".
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