Base | Representation |
---|---|
bin | 10010101111110110… |
… | …101010011010000100 |
3 | 1220221220112200210102 |
4 | 102233312222122010 |
5 | 312211313231320 |
6 | 13125300143232 |
7 | 1311562655102 |
oct | 225766523204 |
9 | 56856480712 |
10 | 20130211460 |
11 | 859aa858a7 |
12 | 3a99697b18 |
13 | 1b8a668738 |
14 | d8d6dcc72 |
15 | 7cc3dc175 |
hex | 4afdaa684 |
20130211460 has 24 divisors (see below), whose sum is σ = 43637104896. Its totient is φ = 7792339680.
The previous prime is 20130211459. The next prime is 20130211499. The reversal of 20130211460 is 6411203102.
It is a Harshad number since it is a multiple of its sum of digits (20).
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16233422 + ... + 16234661.
It is an arithmetic number, because the mean of its divisors is an integer number (1818212704).
Almost surely, 220130211460 is an apocalyptic number.
20130211460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
20130211460 is an abundant number, since it is smaller than the sum of its proper divisors (23506893436).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20130211460 is a wasteful number, since it uses less digits than its factorization.
20130211460 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 32468123 (or 32468121 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 20.
Adding to 20130211460 its reverse (6411203102), we get a palindrome (26541414562).
The spelling of 20130211460 in words is "twenty billion, one hundred thirty million, two hundred eleven thousand, four hundred sixty".
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