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13090213 = 13795549
BaseRepresentation
bin110001111011…
…110110100101
3220122001101201
4301323312211
511322341323
61144322501
7216156613
oct61736645
926561351
1013090213
117430964
124473431
1329342b6
141a4a6b3
1512388ad
hexc7bda5

13090213 has 4 divisors (see below), whose sum is σ = 13185900. Its totient is φ = 12994528.

The previous prime is 13090211. The next prime is 13090219. The reversal of 13090213 is 31209031.

13090213 is digitally balanced in base 3, 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 7628644 + 5461569 = 2762^2 + 2337^2 .

It is a cyclic number.

It is not a de Polignac number, because 13090213 - 21 = 13090211 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13090211) 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, 47638 + ... + 47911.

It is an arithmetic number, because the mean of its divisors is an integer number (3296475).

Almost surely, 213090213 is an apocalyptic number.

It is an amenable number.

13090213 is a deficient number, since it is larger than the sum of its proper divisors (95687).

13090213 is an equidigital number, since it uses as much as digits as its factorization.

13090213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95686.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 13090213 is about 3618.0399389725. The cubic root of 13090213 is about 235.6761153637.

Adding to 13090213 its reverse (31209031), we get a palindrome (44299244).

The spelling of 13090213 in words is "thirteen million, ninety thousand, two hundred thirteen".

Divisors: 1 137 95549 13090213