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12982285 = 52989533
BaseRepresentation
bin110001100001…
…100000001101
3220102120100101
4301201200031
511310413120
61142131101
7215230141
oct61414015
926376311
1012982285
117367868
124420a91
1328c7134
141a1d221
15121690a
hexc6180d

12982285 has 8 divisors (see below), whose sum is σ = 16116120. Its totient is φ = 10027584.

The previous prime is 12982283. The next prime is 12982303. The reversal of 12982285 is 58228921.

It can be written as a sum of positive squares in 4 ways, for example, as 4583881 + 8398404 = 2141^2 + 2898^2 .

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 12982285 - 21 = 12982283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12982283) 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, 44622 + ... + 44911.

It is an arithmetic number, because the mean of its divisors is an integer number (2014515).

Almost surely, 212982285 is an apocalyptic number.

It is an amenable number.

12982285 is a deficient number, since it is larger than the sum of its proper divisors (3133835).

12982285 is an equidigital number, since it uses as much as digits as its factorization.

12982285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89567.

The product of its digits is 23040, while the sum is 37.

The square root of 12982285 is about 3603.0938094921. The cubic root of 12982285 is about 235.0266153649.

The spelling of 12982285 in words is "twelve million, nine hundred eighty-two thousand, two hundred eighty-five".

Divisors: 1 5 29 145 89533 447665 2596457 12982285