Base | Representation |
---|---|
bin | 11100001000101111… |
… | …010110001000010100 |
3 | 2212222111002010221121 |
4 | 130020233112020110 |
5 | 443333104301322 |
6 | 21513503053324 |
7 | 2116444444000 |
oct | 341057261024 |
9 | 85874063847 |
10 | 30211400212 |
11 | 118a3603154 |
12 | 5a318a1244 |
13 | 2b06111396 |
14 | 1668557700 |
15 | bbc485ec7 |
hex | 708bd6214 |
30211400212 has 48 divisors (see below), whose sum is σ = 62201865600. Its totient is φ = 12833095296.
The previous prime is 30211400201. The next prime is 30211400221. The reversal of 30211400212 is 21200411203.
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, 57603 + ... + 252469.
It is an arithmetic number, because the mean of its divisors is an integer number (1295872200).
Almost surely, 230211400212 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 30211400212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31100932800).
30211400212 is an abundant number, since it is smaller than the sum of its proper divisors (31990465388).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30211400212 is a wasteful number, since it uses less digits than its factorization.
30211400212 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 195005 (or 194989 counting only the distinct ones).
The product of its (nonzero) digits is 96, while the sum is 16.
Adding to 30211400212 its reverse (21200411203), we get a palindrome (51411811415).
The spelling of 30211400212 in words is "thirty billion, two hundred eleven million, four hundred thousand, two hundred twelve".
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