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12882909 = 313330331
BaseRepresentation
bin110001001001…
…001111011101
3220020112000210
4301021033131
511244223114
61140043033
7214334334
oct61111735
926215023
1012882909
1172aa136
124393479
132890b30
1419d4d1b
1511e7259
hexc493dd

12882909 has 8 divisors (see below), whose sum is σ = 18498592. Its totient is φ = 7927920.

The previous prime is 12882901. The next prime is 12882911. The reversal of 12882909 is 90928821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12882909 - 23 = 12882901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 330331 = 12882909 / (1 + 2 + 8 + 8 + 2 + 9 + 0 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12882901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165127 + ... + 165204.

It is an arithmetic number, because the mean of its divisors is an integer number (2312324).

Almost surely, 212882909 is an apocalyptic number.

It is an amenable number.

12882909 is a deficient number, since it is larger than the sum of its proper divisors (5615683).

12882909 is a wasteful number, since it uses less digits than its factorization.

12882909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330347.

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 12882909 is about 3589.2769466844. The cubic root of 12882909 is about 234.4253895568.

The spelling of 12882909 in words is "twelve million, eight hundred eighty-two thousand, nine hundred nine".

Divisors: 1 3 13 39 330331 990993 4294303 12882909