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12872353 = 13990181
BaseRepresentation
bin110001000110…
…101010100001
3220012222112211
4301012222201
511243403403
61135522121
7214261504
oct61065241
926188484
1012872353
1172a220a
124389341
1328890a0
1419d113b
1511e406d
hexc46aa1

12872353 has 4 divisors (see below), whose sum is σ = 13862548. Its totient is φ = 11882160.

The previous prime is 12872333. The next prime is 12872357. The reversal of 12872353 is 35327821.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7800849 + 5071504 = 2793^2 + 2252^2 .

It is a cyclic number.

It is not a de Polignac number, because 12872353 - 29 = 12871841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12872357) 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, 495078 + ... + 495103.

It is an arithmetic number, because the mean of its divisors is an integer number (3465637).

Almost surely, 212872353 is an apocalyptic number.

12872353 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12872353 is a deficient number, since it is larger than the sum of its proper divisors (990195).

12872353 is an equidigital number, since it uses as much as digits as its factorization.

12872353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990194.

The product of its digits is 10080, while the sum is 31.

The square root of 12872353 is about 3587.8061541839. The cubic root of 12872353 is about 234.3613442236.

It can be divided in two parts, 12872 and 353, that added together give a square (13225 = 1152).

The spelling of 12872353 in words is "twelve million, eight hundred seventy-two thousand, three hundred fifty-three".

Divisors: 1 13 990181 12872353