Base | Representation |
---|---|
bin | 100110100001… |
… | …1101100010100 |
3 | 1102000021111000 |
4 | 1031003230110 |
5 | 20132401322 |
6 | 2000543300 |
7 | 333461514 |
oct | 115035424 |
9 | 42007430 |
10 | 20200212 |
11 | 1044779a |
12 | 6921b30 |
13 | 42535b6 |
14 | 297b844 |
15 | 1b903ac |
hex | 1343b14 |
20200212 has 48 divisors (see below), whose sum is σ = 52617600. Its totient is φ = 6701760.
The previous prime is 20200181. The next prime is 20200223. The reversal of 20200212 is 21200202.
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 = 20200194 and 20200203.
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 15 ways as a sum of consecutive naturals, for example, 38512 + ... + 39032.
It is an arithmetic number, because the mean of its divisors is an integer number (1096200).
Almost surely, 220200212 is an apocalyptic number.
It is an amenable number.
20200212 is an abundant number, since it is smaller than the sum of its proper divisors (32417388).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20200212 is a wasteful number, since it uses less digits than its factorization.
20200212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 893 (or 885 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 9.
The square root of 20200212 is about 4494.4645954774. The cubic root of 20200212 is about 272.3445209066.
Adding to 20200212 its reverse (21200202), we get a palindrome (41400414).
The spelling of 20200212 in words is "twenty million, two hundred thousand, two hundred twelve".
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