Base | Representation |
---|---|
bin | 10010101000110111… |
… | …100111110000000111 |
3 | 1220122202000212101000 |
4 | 102220313213300013 |
5 | 311441313202330 |
6 | 13105512304343 |
7 | 1305640611354 |
oct | 225067476007 |
9 | 56582025330 |
10 | 20013022215 |
11 | 853a91388a |
12 | 3a663a20b3 |
13 | 1b6c2b6ca4 |
14 | d7bd1562b |
15 | 7c1e8e560 |
hex | 4a8de7c07 |
20013022215 has 32 divisors (see below), whose sum is σ = 35590276800. Its totient is φ = 10670140800.
The previous prime is 20013022193. The next prime is 20013022231. The reversal of 20013022215 is 51222031002.
It is not a de Polignac number, because 20013022215 - 218 = 20012760071 is a prime.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 423181 + ... + 468089.
It is an arithmetic number, because the mean of its divisors is an integer number (1112196150).
Almost surely, 220013022215 is an apocalyptic number.
20013022215 is a deficient number, since it is larger than the sum of its proper divisors (15577254585).
20013022215 is a wasteful number, since it uses less digits than its factorization.
20013022215 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 48224 (or 48218 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 18.
Adding to 20013022215 its reverse (51222031002), we get a palindrome (71235053217).
The spelling of 20013022215 in words is "twenty billion, thirteen million, twenty-two thousand, two hundred fifteen".
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