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12882887 = 31415577
BaseRepresentation
bin110001001001…
…001111000111
3220020111222222
4301021033013
511244223022
61140042555
7214334303
oct61111707
926214888
1012882887
1172aa116
12439345b
132890b14
1419d4d03
1511e7242
hexc493c7

12882887 has 4 divisors (see below), whose sum is σ = 13298496. Its totient is φ = 12467280.

The previous prime is 12882847. The next prime is 12882901. The reversal of 12882887 is 78828821.

12882887 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 an emirpimes, since its reverse is a distinct semiprime: 78828821 = 101977359.

It is a cyclic number.

It is not a de Polignac number, because 12882887 - 26 = 12882823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12882847) 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, 207758 + ... + 207819.

It is an arithmetic number, because the mean of its divisors is an integer number (3324624).

Almost surely, 212882887 is an apocalyptic number.

12882887 is a deficient number, since it is larger than the sum of its proper divisors (415609).

12882887 is an equidigital number, since it uses as much as digits as its factorization.

12882887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415608.

The product of its digits is 114688, while the sum is 44.

The square root of 12882887 is about 3589.2738819990. The cubic root of 12882887 is about 234.4252561149.

The spelling of 12882887 in words is "twelve million, eight hundred eighty-two thousand, eight hundred eighty-seven".

Divisors: 1 31 415577 12882887