Base | Representation |
---|---|
bin | 11011111101111100… |
… | …00101001000000100 |
3 | 1102202102120100220001 |
4 | 31332332011020010 |
5 | 221222331330103 |
6 | 10521533451044 |
7 | 1041042200260 |
oct | 157676051004 |
9 | 42672510801 |
10 | 15015105028 |
11 | 64056a9710 |
12 | 2ab0640a84 |
13 | 1553a07441 |
14 | a262370a0 |
15 | 5cd2ea01d |
hex | 37ef85204 |
15015105028 has 24 divisors (see below), whose sum is σ = 32760229824. Its totient is φ = 5850040800.
The previous prime is 15015104983. The next prime is 15015105029. The reversal of 15015105028 is 82050151051.
15015105028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (28).
It is a junction number, because it is equal to n+sod(n) for n = 15015104987 and 15015105005.
It is not an unprimeable number, because it can be changed into a prime (15015105029) by changing a digit.
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 7 ways as a sum of consecutive naturals, for example, 24374863 + ... + 24375478.
It is an arithmetic number, because the mean of its divisors is an integer number (1365009576).
Almost surely, 215015105028 is an apocalyptic number.
It is an amenable number.
15015105028 is an abundant number, since it is smaller than the sum of its proper divisors (17745124796).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
15015105028 is a wasteful number, since it uses less digits than its factorization.
15015105028 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 48750363 (or 48750361 counting only the distinct ones).
The product of its (nonzero) digits is 2000, while the sum is 28.
Adding to 15015105028 its reverse (82050151051), we get a palindrome (97065256079).
The spelling of 15015105028 in words is "fifteen billion, fifteen million, one hundred five thousand, twenty-eight".
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