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12882385 = 52576477
BaseRepresentation
bin110001001001…
…000111010001
3220020111022101
4301021013101
511244214020
61140040401
7214332655
oct61110721
926214271
1012882385
1172a97aa
124393101
132890819
1419d4a65
1511e700a
hexc491d1

12882385 has 4 divisors (see below), whose sum is σ = 15458868. Its totient is φ = 10305904.

The previous prime is 12882349. The next prime is 12882427. The reversal of 12882385 is 58328821.

12882385 is digitally balanced in base 3, 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 an emirpimes, since its reverse is a distinct semiprime: 58328821 = 199929179.

It can be written as a sum of positive squares in 2 ways, for example, as 5875776 + 7006609 = 2424^2 + 2647^2 .

It is a cyclic number.

It is not a de Polignac number, because 12882385 - 211 = 12880337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288234 + ... + 1288243.

It is an arithmetic number, because the mean of its divisors is an integer number (3864717).

Almost surely, 212882385 is an apocalyptic number.

It is an amenable number.

12882385 is a deficient number, since it is larger than the sum of its proper divisors (2576483).

12882385 is an equidigital number, since it uses as much as digits as its factorization.

12882385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2576482.

The product of its digits is 30720, while the sum is 37.

The square root of 12882385 is about 3589.2039507389. The cubic root of 12882385 is about 234.4222111709.

The spelling of 12882385 in words is "twelve million, eight hundred eighty-two thousand, three hundred eighty-five".

Divisors: 1 5 2576477 12882385