Base | Representation |
---|---|
bin | 101011111010… |
… | …0001001101111 |
3 | 1121022112200220 |
4 | 1113310021233 |
5 | 21343121033 |
6 | 2141222423 |
7 | 366445056 |
oct | 127641157 |
9 | 47275626 |
10 | 23020143 |
11 | 11aa3413 |
12 | 7861a13 |
13 | 49cccb3 |
14 | 30b339d |
15 | 204abb3 |
hex | 15f426f |
23020143 has 8 divisors (see below), whose sum is σ = 30720000. Its totient is φ = 15333528.
The previous prime is 23020111. The next prime is 23020181. The reversal of 23020143 is 34102032.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 23020143 - 25 = 23020111 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23020183) 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, 1938 + ... + 7056.
It is an arithmetic number, because the mean of its divisors is an integer number (3840000).
Almost surely, 223020143 is an apocalyptic number.
23020143 is a deficient number, since it is larger than the sum of its proper divisors (7699857).
23020143 is a wasteful number, since it uses less digits than its factorization.
23020143 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6621.
The product of its (nonzero) digits is 144, while the sum is 15.
The square root of 23020143 is about 4797.9311166377. The cubic root of 23020143 is about 284.4696940691.
Adding to 23020143 its reverse (34102032), we get a palindrome (57122175).
The spelling of 23020143 in words is "twenty-three million, twenty thousand, one hundred forty-three".
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