Base | Representation |
---|---|
bin | 100110100010… |
… | …0111010010000 |
3 | 1102000112022202 |
4 | 1031010322100 |
5 | 20133031300 |
6 | 2001022332 |
7 | 333512201 |
oct | 115047220 |
9 | 42015282 |
10 | 20205200 |
11 | 10450514 |
12 | 69249a8 |
13 | 4255952 |
14 | 297d5a8 |
15 | 1b91ad5 |
hex | 1344e90 |
20205200 has 30 divisors (see below), whose sum is σ = 48543954. Its totient is φ = 8081920.
The previous prime is 20205193. The next prime is 20205223. The reversal of 20205200 is 250202.
It can be written as a sum of positive squares in 3 ways, for example, as 4963984 + 15241216 = 2228^2 + 3904^2 .
It is an unprimeable number.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24857 + ... + 25656.
Almost surely, 220205200 is an apocalyptic number.
20205200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
20205200 is an abundant number, since it is smaller than the sum of its proper divisors (28338754).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20205200 is a wasteful number, since it uses less digits than its factorization.
20205200 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 50531 (or 50520 counting only the distinct ones).
The product of its (nonzero) digits is 40, while the sum is 11.
The square root of 20205200 is about 4495.0194660313. The cubic root of 20205200 is about 272.3669355670.
Adding to 20205200 its reverse (250202), we get a palindrome (20455402).
The spelling of 20205200 in words is "twenty million, two hundred five thousand, two hundred".
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