Search a number
-
+
12983089 = 72264961
BaseRepresentation
bin110001100001…
…101100110001
3220102121110011
4301201230301
511310424324
61142134521
7215232400
oct61415461
926377404
1012983089
117368429
124421441
1328c7602
141a1d637
151216c94
hexc61b31

12983089 has 6 divisors (see below), whose sum is σ = 15102834. Its totient is φ = 11128320.

The previous prime is 12983071. The next prime is 12983093. The reversal of 12983089 is 98038921.

It can be written as a sum of positive squares in only one way, i.e., 10368400 + 2614689 = 3220^2 + 1617^2 .

It is not a de Polignac number, because 12983089 - 221 = 10885937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12983489) 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 5 ways as a sum of consecutive naturals, for example, 132432 + ... + 132529.

It is an arithmetic number, because the mean of its divisors is an integer number (2517139).

Almost surely, 212983089 is an apocalyptic number.

It is an amenable number.

12983089 is a deficient number, since it is larger than the sum of its proper divisors (2119745).

12983089 is an equidigital number, since it uses as much as digits as its factorization.

12983089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264975 (or 264968 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 12983089 is about 3603.2053785484. The cubic root of 12983089 is about 235.0314670403.

The spelling of 12983089 in words is "twelve million, nine hundred eighty-three thousand, eighty-nine".

Divisors: 1 7 49 264961 1854727 12983089