Base | Representation |
---|---|
bin | 100110111100… |
… | …1111100000011 |
3 | 1102102120021022 |
4 | 1031321330003 |
5 | 20212004103 |
6 | 2005420055 |
7 | 335405351 |
oct | 115717403 |
9 | 42376238 |
10 | 20422403 |
11 | 10589721 |
12 | 6a0a62b |
13 | 4300781 |
14 | 29d87d1 |
15 | 1bd6138 |
hex | 1379f03 |
20422403 has 4 divisors (see below), whose sum is σ = 20552640. Its totient is φ = 20292168.
The previous prime is 20422357. The next prime is 20422421. The reversal of 20422403 is 30422402.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 20422403 - 28 = 20422147 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (20422903) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64883 + ... + 65196.
It is an arithmetic number, because the mean of its divisors is an integer number (5138160).
Almost surely, 220422403 is an apocalyptic number.
20422403 is a deficient number, since it is larger than the sum of its proper divisors (130237).
20422403 is a wasteful number, since it uses less digits than its factorization.
20422403 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 130236.
The product of its (nonzero) digits is 384, while the sum is 17.
The square root of 20422403 is about 4519.1152895229. The cubic root of 20422403 is about 273.3394276188.
Adding to 20422403 its reverse (30422402), we get a palindrome (50844805).
Subtracting 20422403 from its reverse (30422402), we obtain a palindrome (9999999).
The spelling of 20422403 in words is "twenty million, four hundred twenty-two thousand, four hundred three".
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