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12872341 = 23559667
BaseRepresentation
bin110001000110…
…101010010101
3220012222112101
4301012222111
511243403331
61135522101
7214261456
oct61065225
926188471
1012872341
1172a21a9
124389331
132889091
1419d112d
1511e4061
hexc46a95

12872341 has 4 divisors (see below), whose sum is σ = 13432032. Its totient is φ = 12312652.

The previous prime is 12872333. The next prime is 12872357. The reversal of 12872341 is 14327821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14327821 = 17842813.

It is a cyclic number.

It is not a de Polignac number, because 12872341 - 23 = 12872333 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 (12872311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 279811 + ... + 279856.

It is an arithmetic number, because the mean of its divisors is an integer number (3358008).

Almost surely, 212872341 is an apocalyptic number.

It is an amenable number.

12872341 is a deficient number, since it is larger than the sum of its proper divisors (559691).

12872341 is an equidigital number, since it uses as much as digits as its factorization.

12872341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559690.

The product of its digits is 2688, while the sum is 28.

The square root of 12872341 is about 3587.8044818524. The cubic root of 12872341 is about 234.3612713973.

The spelling of 12872341 in words is "twelve million, eight hundred seventy-two thousand, three hundred forty-one".

Divisors: 1 23 559667 12872341