Base | Representation |
---|---|
bin | 100111100010… |
… | …1000010110101 |
3 | 1110000012021011 |
4 | 1033011002311 |
5 | 20301330122 |
6 | 2020152221 |
7 | 341126266 |
oct | 117050265 |
9 | 43005234 |
10 | 20730037 |
11 | 10779869 |
12 | 6b38671 |
13 | 43aa7c3 |
14 | 2a7896d |
15 | 1c47377 |
hex | 13c50b5 |
20730037 has 2 divisors, whose sum is σ = 20730038. Its totient is φ = 20730036.
The previous prime is 20730011. The next prime is 20730053. The reversal of 20730037 is 73003702.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 18198756 + 2531281 = 4266^2 + 1591^2 .
It is a cyclic number.
It is not a de Polignac number, because 20730037 - 27 = 20729909 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (20730067) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10365018 + 10365019.
It is an arithmetic number, because the mean of its divisors is an integer number (10365019).
Almost surely, 220730037 is an apocalyptic number.
It is an amenable number.
20730037 is a deficient number, since it is larger than the sum of its proper divisors (1).
20730037 is an equidigital number, since it uses as much as digits as its factorization.
20730037 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 882, while the sum is 22.
The square root of 20730037 is about 4553.0250383673. The cubic root of 20730037 is about 274.7050810776.
Adding to 20730037 its reverse (73003702), we get a palindrome (93733739).
The spelling of 20730037 in words is "twenty million, seven hundred thirty thousand, thirty-seven".
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