Base | Representation |
---|---|
bin | 10010101000110111… |
… | …101001101110111010 |
3 | 1220122202001021111120 |
4 | 102220313221232322 |
5 | 311441313432310 |
6 | 13105512410110 |
7 | 1305640644126 |
oct | 225067515672 |
9 | 56582037446 |
10 | 20013030330 |
11 | 853a919997 |
12 | 3a663a6936 |
13 | 1b6c2ba8a7 |
14 | d7bd18586 |
15 | 7c1e91b70 |
hex | 4a8de9bba |
20013030330 has 32 divisors (see below), whose sum is σ = 49148282304. Its totient is φ = 5212695936.
The previous prime is 20013030299. The next prime is 20013030337. The reversal of 20013030330 is 3303031002.
It is a Harshad number since it is a multiple of its sum of digits (15).
It is not an unprimeable number, because it can be changed into a prime (20013030337) 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, 7755699 + ... + 7758278.
It is an arithmetic number, because the mean of its divisors is an integer number (1535883822).
Almost surely, 220013030330 is an apocalyptic number.
20013030330 is an abundant number, since it is smaller than the sum of its proper divisors (29135251974).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20013030330 is a wasteful number, since it uses less digits than its factorization.
20013030330 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 15514030.
The product of its (nonzero) digits is 162, while the sum is 15.
Adding to 20013030330 its reverse (3303031002), we get a palindrome (23316061332).
The spelling of 20013030330 in words is "twenty billion, thirteen million, thirty thousand, three hundred thirty".
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