Base | Representation |
---|---|
bin | 11001000010111… |
… | …01111111111100 |
3 | 112122100012022122 |
4 | 30201131333330 |
5 | 412241201340 |
6 | 32503102112 |
7 | 5130552041 |
oct | 1441357774 |
9 | 478305278 |
10 | 210100220 |
11 | a8661450 |
12 | 5a441938 |
13 | 346b2675 |
14 | 1dc911c8 |
15 | 136a1db5 |
hex | c85dffc |
210100220 has 48 divisors (see below), whose sum is σ = 483840000. Its totient is φ = 76000320.
The previous prime is 210100211. The next prime is 210100243. The reversal of 210100220 is 22001012.
It is a junction number, because it is equal to n+sod(n) for n = 210100198 and 210100207.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41381 + ... + 46179.
It is an arithmetic number, because the mean of its divisors is an integer number (10080000).
Almost surely, 2210100220 is an apocalyptic number.
210100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 210100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241920000).
210100220 is an abundant number, since it is smaller than the sum of its proper divisors (273739780).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
210100220 is a wasteful number, since it uses less digits than its factorization.
210100220 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5018 (or 5016 counting only the distinct ones).
The product of its (nonzero) digits is 8, while the sum is 8.
The square root of 210100220 is about 14494.8342522431. The cubic root of 210100220 is about 594.4867357715.
Adding to 210100220 its reverse (22001012), we get a palindrome (232101232).
The spelling of 210100220 in words is "two hundred ten million, one hundred thousand, two hundred twenty".
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