Base | Representation |
---|---|
bin | 10010101110000101… |
… | …000011100110000010 |
3 | 1220212211111122121011 |
4 | 102232011003212002 |
5 | 312131202231320 |
6 | 13122313551134 |
7 | 1311051560230 |
oct | 225605034602 |
9 | 56784448534 |
10 | 20100430210 |
11 | 85851947a3 |
12 | 3a8b7154aa |
13 | 1b8443c1b3 |
14 | d89789950 |
15 | 7c99a805a |
hex | 4ae143982 |
20100430210 has 64 divisors (see below), whose sum is σ = 41930477568. Its totient is φ = 6795270144.
The previous prime is 20100430187. The next prime is 20100430211. The reversal of 20100430210 is 1203400102.
It is not an unprimeable number, because it can be changed into a prime (20100430211) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1875487 + ... + 1886173.
It is an arithmetic number, because the mean of its divisors is an integer number (655163712).
Almost surely, 220100430210 is an apocalyptic number.
20100430210 is an abundant number, since it is smaller than the sum of its proper divisors (21830047358).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20100430210 is a wasteful number, since it uses less digits than its factorization.
20100430210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11075.
The product of its (nonzero) digits is 48, while the sum is 13.
Adding to 20100430210 its reverse (1203400102), we get a palindrome (21303830312).
The spelling of 20100430210 in words is "twenty billion, one hundred million, four hundred thirty thousand, two hundred ten".
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