Base | Representation |
---|---|
bin | 110001001011… |
… | …000111111111 |
3 | 220020220121111 |
4 | 301023013333 |
5 | 11244444443 |
6 | 1140142451 |
7 | 214365664 |
oct | 61130777 |
9 | 26226544 |
10 | 12890623 |
11 | 7304a09 |
12 | 4397a27 |
13 | 28944b5 |
14 | 19d7a6b |
15 | 11e969d |
hex | c4b1ff |
12890623 has 8 divisors (see below), whose sum is σ = 13059200. Its totient is φ = 12723480.
The previous prime is 12890617. The next prime is 12890629. The reversal of 12890623 is 32609821.
It is an interprime number because it is at equal distance from previous prime (12890617) and next prime (12890629).
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 12890623 - 213 = 12882431 is a prime.
It is a super-3 number, since 3×128906233 (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12890629) 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, 41836 + ... + 42142.
It is an arithmetic number, because the mean of its divisors is an integer number (1632400).
Almost surely, 212890623 is an apocalyptic number.
12890623 is a deficient number, since it is larger than the sum of its proper divisors (168577).
12890623 is a wasteful number, since it uses less digits than its factorization.
12890623 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 717.
The product of its (nonzero) digits is 5184, while the sum is 31.
The square root of 12890623 is about 3590.3513755620. The cubic root of 12890623 is about 234.4721697946.
The spelling of 12890623 in words is "twelve million, eight hundred ninety thousand, six hundred twenty-three".
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