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13120633 = 43305131
BaseRepresentation
bin110010000011…
…010001111001
3220200121010101
4302003101321
511324330013
61145115401
7216344401
oct62032171
926617111
1013120633
1174517a9
124488b61
1329450b6
141a57801
1512428dd
hexc83479

13120633 has 4 divisors (see below), whose sum is σ = 13425808. Its totient is φ = 12815460.

The previous prime is 13120631. The next prime is 13120643. The reversal of 13120633 is 33602131.

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: 33602131 = 102132911.

It is a cyclic number.

It is not a de Polignac number, because 13120633 - 21 = 13120631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13120633.

It is not an unprimeable number, because it can be changed into a prime (13120631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152523 + ... + 152608.

It is an arithmetic number, because the mean of its divisors is an integer number (3356452).

Almost surely, 213120633 is an apocalyptic number.

It is an amenable number.

13120633 is a deficient number, since it is larger than the sum of its proper divisors (305175).

13120633 is an equidigital number, since it uses as much as digits as its factorization.

13120633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305174.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 13120633 is about 3622.2414331461. The cubic root of 13120633 is about 235.8585346286.

Adding to 13120633 its reverse (33602131), we get a palindrome (46722764).

The spelling of 13120633 in words is "thirteen million, one hundred twenty thousand, six hundred thirty-three".

Divisors: 1 43 305131 13120633