Base | Representation |
---|---|
bin | 111100011000… |
… | …110001110000 |
3 | 1002210020212001 |
4 | 330120301300 |
5 | 13023031003 |
6 | 1323143344 |
7 | 251360656 |
oct | 74306160 |
9 | 32706761 |
10 | 15830128 |
11 | 8a32456 |
12 | 5374b54 |
13 | 3383452 |
14 | 2160dd6 |
15 | 15ca61d |
hex | f18c70 |
15830128 has 20 divisors (see below), whose sum is σ = 32475600. Its totient is φ = 7449344.
The previous prime is 15830107. The next prime is 15830131. The reversal of 15830128 is 82103851.
It is a zygodrome in base 2.
It is a junction number, because it is equal to n+sod(n) for n = 15830096 and 15830105.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28828 + ... + 29371.
It is an arithmetic number, because the mean of its divisors is an integer number (1623780).
Almost surely, 215830128 is an apocalyptic number.
It is an amenable number.
15830128 is an abundant number, since it is smaller than the sum of its proper divisors (16645472).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15830128 is a wasteful number, since it uses less digits than its factorization.
15830128 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 58224 (or 58218 counting only the distinct ones).
The product of its (nonzero) digits is 1920, while the sum is 28.
The square root of 15830128 is about 3978.7093384664. The cubic root of 15830128 is about 251.0892631305.
Adding to 15830128 its reverse (82103851), we get a palindrome (97933979).
The spelling of 15830128 in words is "fifteen million, eight hundred thirty thousand, one hundred twenty-eight".
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