Base | Representation |
---|---|
bin | 11011111101010110… |
… | …000001000101000100 |
3 | 2212111011022201200010 |
4 | 123331112001011010 |
5 | 442440133223022 |
6 | 21442513150220 |
7 | 2111633404041 |
oct | 337526010504 |
9 | 85434281603 |
10 | 30020211012 |
11 | 11805698950 |
12 | 599985b370 |
13 | 2aa562058c |
14 | 164adca1c8 |
15 | baa7bc50c |
hex | 6fd581144 |
30020211012 has 48 divisors (see below), whose sum is σ = 77171701824. Its totient is φ = 9006960000.
The previous prime is 30020210959. The next prime is 30020211019. The reversal of 30020211012 is 21011202003.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is not an unprimeable number, because it can be changed into a prime (30020211019) 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, 1112539 + ... + 1139202.
It is an arithmetic number, because the mean of its divisors is an integer number (1607743788).
Almost surely, 230020211012 is an apocalyptic number.
It is an amenable number.
30020211012 is an abundant number, since it is smaller than the sum of its proper divisors (47151490812).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30020211012 is a wasteful number, since it uses less digits than its factorization.
30020211012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2251860 (or 2251858 counting only the distinct ones).
The product of its (nonzero) digits is 24, while the sum is 12.
Adding to 30020211012 its reverse (21011202003), we get a palindrome (51031413015).
Subtracting from 30020211012 its reverse (21011202003), we obtain a palindrome (9009009009).
The spelling of 30020211012 in words is "thirty billion, twenty million, two hundred eleven thousand, twelve".
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