Base | Representation |
---|---|
bin | 100110001100… |
… | …0011011101111 |
3 | 1101200021102110 |
4 | 1030120123233 |
5 | 20111214043 |
6 | 1553055103 |
7 | 332123106 |
oct | 114303357 |
9 | 41607373 |
10 | 20023023 |
11 | 10336659 |
12 | 6857493 |
13 | 41c0a57 |
14 | 293303d |
15 | 1b57b33 |
hex | 13186ef |
20023023 has 8 divisors (see below), whose sum is σ = 26804736. Its totient is φ = 13295000.
The previous prime is 20023009. The next prime is 20023027. The reversal of 20023023 is 32032002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20023023 - 29 = 20022511 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20023027) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12543 + ... + 14048.
It is an arithmetic number, because the mean of its divisors is an integer number (3350592).
Almost surely, 220023023 is an apocalyptic number.
20023023 is a deficient number, since it is larger than the sum of its proper divisors (6781713).
20023023 is a wasteful number, since it uses less digits than its factorization.
20023023 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26845.
The product of its (nonzero) digits is 72, while the sum is 12.
The square root of 20023023 is about 4474.7092642986. The cubic root of 20023023 is about 271.5458784463.
Adding to 20023023 its reverse (32032002), we get a palindrome (52055025).
The spelling of 20023023 in words is "twenty million, twenty-three thousand, twenty-three".
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