Base | Representation |
---|---|
bin | 101101010100… |
… | …110110100001 |
3 | 211100122212222 |
4 | 231110312201 |
5 | 11020210024 |
6 | 1102400425 |
7 | 202665035 |
oct | 55246641 |
9 | 24318788 |
10 | 11881889 |
11 | 6786048 |
12 | 3b90115 |
13 | 2600306 |
14 | 18141c5 |
15 | 109a85e |
hex | b54da1 |
11881889 has 4 divisors (see below), whose sum is σ = 12158256. Its totient is φ = 11605524.
The previous prime is 11881879. The next prime is 11881901. The reversal of 11881889 is 98818811.
11881889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 11881889 - 216 = 11816353 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (11881829) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138119 + ... + 138204.
It is an arithmetic number, because the mean of its divisors is an integer number (3039564).
Almost surely, 211881889 is an apocalyptic number.
It is an amenable number.
11881889 is a deficient number, since it is larger than the sum of its proper divisors (276367).
11881889 is an equidigital number, since it uses as much as digits as its factorization.
11881889 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 276366.
The product of its digits is 36864, while the sum is 44.
The square root of 11881889 is about 3447.0116042741. The cubic root of 11881889 is about 228.1892409057.
The spelling of 11881889 in words is "eleven million, eight hundred eighty-one thousand, eight hundred eighty-nine".
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