Base | Representation |
---|---|
bin | 10111000011111110… |
… | …10010101111011100 |
3 | 1011221212210021211102 |
4 | 23201333102233130 |
5 | 200324114300103 |
6 | 5404332212232 |
7 | 615552110114 |
oct | 134177225734 |
9 | 34855707742 |
10 | 12381400028 |
11 | 5283a83108 |
12 | 249660a078 |
13 | 122419300a |
14 | 856540044 |
15 | 4c6eace88 |
hex | 2e1fd2bdc |
12381400028 has 6 divisors (see below), whose sum is σ = 21667450056. Its totient is φ = 6190700012.
The previous prime is 12381399991. The next prime is 12381400051. The reversal of 12381400028 is 82000418321.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1547675000 + ... + 1547675007.
It is an arithmetic number, because the mean of its divisors is an integer number (3611241676).
Almost surely, 212381400028 is an apocalyptic number.
It is an amenable number.
12381400028 is a deficient number, since it is larger than the sum of its proper divisors (9286050028).
12381400028 is a wasteful number, since it uses less digits than its factorization.
12381400028 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3095350011 (or 3095350009 counting only the distinct ones).
The product of its (nonzero) digits is 3072, while the sum is 29.
Adding to 12381400028 its reverse (82000418321), we get a palindrome (94381818349).
The spelling of 12381400028 in words is "twelve billion, three hundred eighty-one million, four hundred thousand, twenty-eight".
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