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12860233 = 89144497
BaseRepresentation
bin110001000011…
…101101001001
3220012100220221
4301003231021
511243011413
61135350041
7214211251
oct61035511
926170827
1012860233
1172940a1
124382321
132883709
1419ca961
1511e068d
hexc43b49

12860233 has 4 divisors (see below), whose sum is σ = 13004820. Its totient is φ = 12715648.

The previous prime is 12860227. The next prime is 12860261. The reversal of 12860233 is 33206821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33206821 = 49167631.

It can be written as a sum of positive squares in 2 ways, for example, as 937024 + 11923209 = 968^2 + 3453^2 .

It is a cyclic number.

It is not a de Polignac number, because 12860233 - 213 = 12852041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12860198 and 12860207.

It is not an unprimeable number, because it can be changed into a prime (12860273) 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 3 ways as a sum of consecutive naturals, for example, 72160 + ... + 72337.

It is an arithmetic number, because the mean of its divisors is an integer number (3251205).

Almost surely, 212860233 is an apocalyptic number.

It is an amenable number.

12860233 is a deficient number, since it is larger than the sum of its proper divisors (144587).

12860233 is an equidigital number, since it uses as much as digits as its factorization.

12860233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144586.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 12860233 is about 3586.1167019493. The cubic root of 12860233 is about 234.2877665998.

The spelling of 12860233 in words is "twelve million, eight hundred sixty thousand, two hundred thirty-three".

Divisors: 1 89 144497 12860233