Base | Representation |
---|---|
bin | 101011111000… |
… | …0100100100111 |
3 | 1121021210120210 |
4 | 1113300210213 |
5 | 21342133404 |
6 | 2141030503 |
7 | 366354240 |
oct | 127604447 |
9 | 47253523 |
10 | 23005479 |
11 | 11a933a2 |
12 | 7855433 |
13 | 49c6413 |
14 | 30abcc7 |
15 | 2046689 |
hex | 15f0927 |
23005479 has 16 divisors (see below), whose sum is σ = 35632640. Its totient is φ = 12929760.
The previous prime is 23005429. The next prime is 23005517. The reversal of 23005479 is 97450032.
It is not a de Polignac number, because 23005479 - 27 = 23005351 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (23005429) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7699 + ... + 10260.
It is an arithmetic number, because the mean of its divisors is an integer number (2227040).
Almost surely, 223005479 is an apocalyptic number.
23005479 is a deficient number, since it is larger than the sum of its proper divisors (12627161).
23005479 is a wasteful number, since it uses less digits than its factorization.
23005479 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 18030.
The product of its (nonzero) digits is 7560, while the sum is 30.
The square root of 23005479 is about 4796.4027145351. The cubic root of 23005479 is about 284.4092781447.
The spelling of 23005479 in words is "twenty-three million, five thousand, four hundred seventy-nine".
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