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12886049 = 112331253
BaseRepresentation
bin110001001010…
…000000100001
3220020200100002
4301022000201
511244323144
61140105345
7214346441
oct61120041
926220302
1012886049
117301530
124395255
1328923a7
1419d6121
1511e814e
hexc4a021

12886049 has 24 divisors (see below), whose sum is σ = 15443136. Its totient is φ = 10639200.

The previous prime is 12886019. The next prime is 12886061. The reversal of 12886049 is 94068821.

It is not a de Polignac number, because 12886049 - 28 = 12885793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12886019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 243107 + ... + 243159.

It is an arithmetic number, because the mean of its divisors is an integer number (643464).

Almost surely, 212886049 is an apocalyptic number.

It is an amenable number.

12886049 is a deficient number, since it is larger than the sum of its proper divisors (2557087).

12886049 is a wasteful number, since it uses less digits than its factorization.

12886049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 12886049 is about 3589.7143340383. The cubic root of 12886049 is about 234.4444338044. Note that the first 4 decimals are identical.

It can be divided in two parts, 1288 and 6049, that added together give a palindrome (7337).

The spelling of 12886049 in words is "twelve million, eight hundred eighty-six thousand, forty-nine".

Divisors: 1 11 23 31 53 253 341 583 713 961 1219 1643 7843 10571 13409 18073 22103 37789 50933 243133 415679 560263 1171459 12886049