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13203441 = 321786297
BaseRepresentation
bin110010010111…
…011111110001
3220211210201100
4302113133301
511340002231
61150555013
7220140666
oct62273761
926753640
1013203441
1174a8a39
124508a69
1329739b4
141a79a6d
15125c1e6
hexc977f1

13203441 has 12 divisors (see below), whose sum is σ = 20193732. Its totient is φ = 8284416.

The previous prime is 13203431. The next prime is 13203457. The reversal of 13203441 is 14430231.

13203441 is a `hidden beast` number, since 1 + 320 + 344 + 1 = 666.

13203441 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4822416 + 8381025 = 2196^2 + 2895^2 .

It is not a de Polignac number, because 13203441 - 25 = 13203409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13203401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42996 + ... + 43301.

It is an arithmetic number, because the mean of its divisors is an integer number (1682811).

Almost surely, 213203441 is an apocalyptic number.

It is an amenable number.

13203441 is a deficient number, since it is larger than the sum of its proper divisors (6990291).

13203441 is a wasteful number, since it uses less digits than its factorization.

13203441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86320 (or 86317 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13203441 is about 3633.6539460989. The cubic root of 13203441 is about 236.3536842277.

Adding to 13203441 its reverse (14430231), we get a palindrome (27633672).

It can be divided in two parts, 1320 and 3441, that added together give a square (4761 = 692).

The spelling of 13203441 in words is "thirteen million, two hundred three thousand, four hundred forty-one".

Divisors: 1 3 9 17 51 153 86297 258891 776673 1467049 4401147 13203441