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13432013 = 71918859
BaseRepresentation
bin110011001111…
…010011001101
3221021102020222
4303033103031
511414311023
61155521125
7222112250
oct63172315
927242228
1013432013
117644741
1245b91a5
132a23a4a
141ad9097
1512a4cc8
hexccf4cd

13432013 has 4 divisors (see below), whose sum is σ = 15350880. Its totient is φ = 11513148.

The previous prime is 13432009. The next prime is 13432019. The reversal of 13432013 is 31023431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31023431 = 47660073.

It is a cyclic number.

It is not a de Polignac number, because 13432013 - 22 = 13432009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13431982 and 13432000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13432019) 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, 959423 + ... + 959436.

It is an arithmetic number, because the mean of its divisors is an integer number (3837720).

Almost surely, 213432013 is an apocalyptic number.

It is an amenable number.

13432013 is a deficient number, since it is larger than the sum of its proper divisors (1918867).

13432013 is an equidigital number, since it uses as much as digits as its factorization.

13432013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918866.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13432013 is about 3664.9710776485. The cubic root of 13432013 is about 237.7097714519.

Adding to 13432013 its reverse (31023431), we get a palindrome (44455444).

The spelling of 13432013 in words is "thirteen million, four hundred thirty-two thousand, thirteen".

Divisors: 1 7 1918859 13432013