Base | Representation |
---|---|
bin | 10010101001010011… |
… | …000000001100010010 |
3 | 1220200020112112201200 |
4 | 102221103000030102 |
5 | 312000132401320 |
6 | 13110330212030 |
7 | 1306055615433 |
oct | 225123001422 |
9 | 56606475650 |
10 | 20020200210 |
11 | 854397680a |
12 | 3a68884016 |
13 | 1b7092b21a |
14 | d7cc6348a |
15 | 7c290b290 |
hex | 4a94c0312 |
20020200210 has 48 divisors (see below), whose sum is σ = 53731641600. Its totient is φ = 5166502560.
The previous prime is 20020200139. The next prime is 20020200217. The reversal of 20020200210 is 1200202002.
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 = 20020200192 and 20020200201.
It is not an unprimeable number, because it can be changed into a prime (20020200217) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3585060 + ... + 3590639.
It is an arithmetic number, because the mean of its divisors is an integer number (1119409200).
Almost surely, 220020200210 is an apocalyptic number.
20020200210 is an abundant number, since it is smaller than the sum of its proper divisors (33711441390).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20020200210 is a wasteful number, since it uses less digits than its factorization.
20020200210 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7175743 (or 7175740 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 9.
Adding to 20020200210 its reverse (1200202002), we get a palindrome (21220402212).
The spelling of 20020200210 in words is "twenty billion, twenty million, two hundred thousand, two hundred ten".
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