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13233013 = 37357649
BaseRepresentation
bin110010011110…
…101101110101
3220220022021121
4302132231311
511341424023
61151343541
7220323133
oct62365565
926808247
1013233013
117519182
124521bb1
1329842b1
141a86753
151265d5d
hexc9eb75

13233013 has 4 divisors (see below), whose sum is σ = 13590700. Its totient is φ = 12875328.

The previous prime is 13233007. The next prime is 13233061. The reversal of 13233013 is 31033231.

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 8898289 + 4334724 = 2983^2 + 2082^2 .

It is a cyclic number.

It is not a de Polignac number, because 13233013 - 29 = 13232501 is a prime.

It is a super-2 number, since 2×132330132 = 350225266116338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13233083) 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, 178788 + ... + 178861.

It is an arithmetic number, because the mean of its divisors is an integer number (3397675).

Almost surely, 213233013 is an apocalyptic number.

It is an amenable number.

13233013 is a deficient number, since it is larger than the sum of its proper divisors (357687).

13233013 is an equidigital number, since it uses as much as digits as its factorization.

13233013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357686.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 13233013 is about 3637.7208524020. The cubic root of 13233013 is about 236.5300079476.

Adding to 13233013 its reverse (31033231), we get a palindrome (44266244).

The spelling of 13233013 in words is "thirteen million, two hundred thirty-three thousand, thirteen".

Divisors: 1 37 357649 13233013