Base | Representation |
---|---|
bin | 111100110011011… |
… | …010100101101010 |
3 | 2122002112000111200 |
4 | 330303122211222 |
5 | 4042122024320 |
6 | 245120305030 |
7 | 34164542106 |
oct | 7463324552 |
9 | 2562460450 |
10 | 1020111210 |
11 | 48390a718 |
12 | 245772176 |
13 | 13345c101 |
14 | 996a4906 |
15 | 5e855290 |
hex | 3ccda96a |
1020111210 has 48 divisors (see below), whose sum is σ = 2654424864. Its totient is φ = 271810656.
The previous prime is 1020111187. The next prime is 1020111263. The reversal of 1020111210 is 121110201.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 1020111192 and 1020111201.
It is an unprimeable number.
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 23 ways as a sum of consecutive naturals, for example, 129649 + ... + 137291.
It is an arithmetic number, because the mean of its divisors is an integer number (55300518).
Almost surely, 21020111210 is an apocalyptic number.
1020111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
1020111210 is an abundant number, since it is smaller than the sum of its proper divisors (1634313654).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1020111210 is a wasteful number, since it uses less digits than its factorization.
1020111210 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9139 (or 9136 counting only the distinct ones).
The product of its (nonzero) digits is 4, while the sum is 9.
The square root of 1020111210 is about 31939.1798579738. The cubic root of 1020111210 is about 1006.6592920579.
Adding to 1020111210 its reverse (121110201), we get a palindrome (1141221411).
The spelling of 1020111210 in words is "one billion, twenty million, one hundred eleven thousand, two hundred ten".
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