Base | Representation |
---|---|
bin | 11011111100110111… |
… | …000111100010100010 |
3 | 2212110121002012120001 |
4 | 123330313013202202 |
5 | 442431100023020 |
6 | 21442023410214 |
7 | 2111504506630 |
oct | 337467074242 |
9 | 85417065501 |
10 | 30012111010 |
11 | 11801066232 |
12 | 5996bb396a |
13 | 2aa3a4578b |
14 | 1649cbc350 |
15 | ba9c1c50a |
hex | 6fcdc78a2 |
30012111010 has 128 divisors (see below), whose sum is σ = 66695270400. Its totient is φ = 9493666560.
The previous prime is 30012111001. The next prime is 30012111011. The reversal of 30012111010 is 1011121003.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is not an unprimeable number, because it can be changed into a prime (30012111011) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29109195 + ... + 29110225.
It is an arithmetic number, because the mean of its divisors is an integer number (521056800).
Almost surely, 230012111010 is an apocalyptic number.
30012111010 is an abundant number, since it is smaller than the sum of its proper divisors (36683159390).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30012111010 is a wasteful number, since it uses less digits than its factorization.
30012111010 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1616.
The product of its (nonzero) digits is 6, while the sum is 10.
Adding to 30012111010 its reverse (1011121003), we get a palindrome (31023232013).
The spelling of 30012111010 in words is "thirty billion, twelve million, one hundred eleven thousand, ten".
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