Base | Representation |
---|---|
bin | 10111001001110100… |
… | …01110010011110101 |
3 | 1012002021222220000002 |
4 | 23210322032103311 |
5 | 200424140342210 |
6 | 5413242401045 |
7 | 620015452262 |
oct | 134472162365 |
9 | 35067886002 |
10 | 12430402805 |
11 | 52a9702677 |
12 | 24aab00185 |
13 | 123138c542 |
14 | 85cc58269 |
15 | 4cb43c4a5 |
hex | 2e4e8e4f5 |
12430402805 has 16 divisors (see below), whose sum is σ = 16161228864. Its totient is φ = 9141699840.
The previous prime is 12430402793. The next prime is 12430402861. The reversal of 12430402805 is 50820403421.
It is a happy number.
It is not a de Polignac number, because 12430402805 - 26 = 12430402741 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1696811 + ... + 1704120.
It is an arithmetic number, because the mean of its divisors is an integer number (1010076804).
Almost surely, 212430402805 is an apocalyptic number.
It is an amenable number.
12430402805 is a deficient number, since it is larger than the sum of its proper divisors (3730826059).
12430402805 is a wasteful number, since it uses less digits than its factorization.
12430402805 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3400996.
The product of its (nonzero) digits is 7680, while the sum is 29.
The spelling of 12430402805 in words is "twelve billion, four hundred thirty million, four hundred two thousand, eight hundred five".
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