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13408441 = 38934469
BaseRepresentation
bin110011001001…
…100010111001
3221020012220221
4303021202321
511413032231
61155220041
7221653444
oct63114271
927205827
1013408441
117628a62
1245a7621
132a160b7
141ad065b
15129cd11
hexcc98b9

13408441 has 4 divisors (see below), whose sum is σ = 13443300. Its totient is φ = 13373584.

The previous prime is 13408397. The next prime is 13408463. The reversal of 13408441 is 14480431.

13408441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5546025 + 7862416 = 2355^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 13408441 - 27 = 13408313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13408481) 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, 16846 + ... + 17623.

It is an arithmetic number, because the mean of its divisors is an integer number (3360825).

Almost surely, 213408441 is an apocalyptic number.

It is an amenable number.

13408441 is a deficient number, since it is larger than the sum of its proper divisors (34859).

13408441 is an equidigital number, since it uses as much as digits as its factorization.

13408441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34858.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 13408441 is about 3661.7538147724. The cubic root of 13408441 is about 237.5706367917.

Adding to 13408441 its reverse (14480431), we get a palindrome (27888872).

The spelling of 13408441 in words is "thirteen million, four hundred eight thousand, four hundred forty-one".

Divisors: 1 389 34469 13408441