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13210345 = 57013769
BaseRepresentation
bin110010011001…
…001011101001
3220212011012001
4302121023221
511340212340
61151051001
7220200061
oct62311351
926764161
1013210345
117503145
124510a61
132976b95
141a7c3a1
15125e29a
hexc992e9

13210345 has 8 divisors (see below), whose sum is σ = 15879240. Its totient is φ = 10550400.

The previous prime is 13210313. The next prime is 13210357. The reversal of 13210345 is 54301231.

13210345 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5531904 + 7678441 = 2352^2 + 2771^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13210345 - 25 = 13210313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1621 + ... + 5389.

It is an arithmetic number, because the mean of its divisors is an integer number (1984905).

Almost surely, 213210345 is an apocalyptic number.

It is an amenable number.

13210345 is a deficient number, since it is larger than the sum of its proper divisors (2668895).

13210345 is an equidigital number, since it uses as much as digits as its factorization.

13210345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13210345 is about 3634.6038298555. The cubic root of 13210345 is about 236.3948730234.

Adding to 13210345 its reverse (54301231), we get a palindrome (67511576).

The spelling of 13210345 in words is "thirteen million, two hundred ten thousand, three hundred forty-five".

Divisors: 1 5 701 3505 3769 18845 2642069 13210345