Base | Representation |
---|---|
bin | 11011111100010000… |
… | …111011101111011100 |
3 | 2212102220020122200210 |
4 | 123330100323233130 |
5 | 442421014214322 |
6 | 21441025052420 |
7 | 2111323436556 |
oct | 337420735734 |
9 | 85386218623 |
10 | 30002101212 |
11 | 117a6449776 |
12 | 5993787110 |
13 | 2aa194c615 |
14 | 16488344d6 |
15 | ba8de170c |
hex | 6fc43bbdc |
30002101212 has 48 divisors (see below), whose sum is σ = 72107501312. Its totient is φ = 9703411200.
The previous prime is 30002101153. The next prime is 30002101219. The reversal of 30002101212 is 21210120003.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (30002101219) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114613 + ... + 270444.
Almost surely, 230002101212 is an apocalyptic number.
It is an amenable number.
30002101212 is an abundant number, since it is smaller than the sum of its proper divisors (42105400100).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30002101212 is a wasteful number, since it uses less digits than its factorization.
30002101212 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 385258 (or 385256 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 12.
Adding to 30002101212 its reverse (21210120003), we get a palindrome (51212221215).
The spelling of 30002101212 in words is "thirty billion, two million, one hundred one thousand, two hundred twelve".
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