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13240013 = 59349643
BaseRepresentation
bin110010100000…
…011011001101
3220220122212212
4302200123031
511342140023
61151440205
7220352423
oct62403315
926818785
1013240013
117523466
124526065
132987537
141a89113
151267e78
hexca06cd

13240013 has 8 divisors (see below), whose sum is σ = 13524000. Its totient is φ = 12958128.

The previous prime is 13239997. The next prime is 13240021. The reversal of 13240013 is 31004231.

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

It is a cyclic number.

It is not a de Polignac number, because 13240013 - 24 = 13239997 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 13240013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13240063) 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 7 ways as a sum of consecutive naturals, for example, 20270 + ... + 20912.

It is an arithmetic number, because the mean of its divisors is an integer number (1690500).

Almost surely, 213240013 is an apocalyptic number.

It is an amenable number.

13240013 is a deficient number, since it is larger than the sum of its proper divisors (283987).

13240013 is an equidigital number, since it uses as much as digits as its factorization.

13240013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 13240013 is about 3638.6828660932. The cubic root of 13240013 is about 236.5717071483.

Adding to 13240013 its reverse (31004231), we get a palindrome (44244244).

The spelling of 13240013 in words is "thirteen million, two hundred forty thousand, thirteen".

Divisors: 1 59 349 643 20591 37937 224407 13240013