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10813309 = 1317113433
BaseRepresentation
bin101001001111…
…111101111101
3202100101001221
4221033331331
510232011214
61023433341
7160624453
oct51177575
922311057
1010813309
116116221
123755851
132317b10
1416169d3
15e38e24
hexa4ff7d

10813309 has 16 divisors (see below), whose sum is σ = 12467952. Its totient is φ = 9289728.

The previous prime is 10813307. The next prime is 10813333. The reversal of 10813309 is 90331801.

It can be written as a sum of positive squares in 8 ways, for example, as 3404025 + 7409284 = 1845^2 + 2722^2 .

It is a cyclic number.

It is not a de Polignac number, because 10813309 - 21 = 10813307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10813303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24757 + ... + 25189.

It is an arithmetic number, because the mean of its divisors is an integer number (779247).

Almost surely, 210813309 is an apocalyptic number.

It is an amenable number.

10813309 is a deficient number, since it is larger than the sum of its proper divisors (1654643).

10813309 is a wasteful number, since it uses less digits than its factorization.

10813309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 10813309 is about 3288.3596214526. The cubic root of 10813309 is about 221.1326503787.

The spelling of 10813309 in words is "ten million, eight hundred thirteen thousand, three hundred nine".

Divisors: 1 13 17 113 221 433 1469 1921 5629 7361 24973 48929 95693 636077 831793 10813309