Base | Representation |
---|---|
bin | 110001100011… |
… | …001000010111 |
3 | 220102220111021 |
4 | 301203020113 |
5 | 11311121301 |
6 | 1142222011 |
7 | 215255443 |
oct | 61431027 |
9 | 26386437 |
10 | 12988951 |
11 | 7371878 |
12 | 4424907 |
13 | 28ca191 |
14 | 1a21823 |
15 | 12188a1 |
hex | c63217 |
12988951 has 8 divisors (see below), whose sum is σ = 14267520. Its totient is φ = 11769912.
The previous prime is 12988931. The next prime is 12988957. The reversal of 12988951 is 15988921.
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 12988951 - 215 = 12956183 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12988898 and 12988907.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12988957) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14425 + ... + 15298.
It is an arithmetic number, because the mean of its divisors is an integer number (1783440).
Almost surely, 212988951 is an apocalyptic number.
12988951 is a deficient number, since it is larger than the sum of its proper divisors (1278569).
12988951 is a wasteful number, since it uses less digits than its factorization.
12988951 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 29765.
The product of its digits is 51840, while the sum is 43.
The square root of 12988951 is about 3604.0187291411. The cubic root of 12988951 is about 235.0668347702.
The spelling of 12988951 in words is "twelve million, nine hundred eighty-eight thousand, nine hundred fifty-one".
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