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13240843 = 711612819
BaseRepresentation
bin110010100000…
…101000001011
3220220201000121
4302200220023
511342201333
61151444111
7220355020
oct62405013
926821017
1013240843
117524050
124526637
132987a25
141a89547
15126832d
hexca0a0b

13240843 has 16 divisors (see below), whose sum is σ = 16784640. Its totient is φ = 10144800.

The previous prime is 13240837. The next prime is 13240859. The reversal of 13240843 is 34804231.

It is a cyclic number.

It is not a de Polignac number, because 13240843 - 213 = 13232651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13240873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3288 + ... + 6106.

It is an arithmetic number, because the mean of its divisors is an integer number (1049040).

Almost surely, 213240843 is an apocalyptic number.

13240843 is a deficient number, since it is larger than the sum of its proper divisors (3543797).

13240843 is a wasteful number, since it uses less digits than its factorization.

13240843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2898.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 13240843 is about 3638.7969165646. The cubic root of 13240843 is about 236.5766505074.

The spelling of 13240843 in words is "thirteen million, two hundred forty thousand, eight hundred forty-three".

Divisors: 1 7 11 61 77 427 671 2819 4697 19733 31009 171959 217063 1203713 1891549 13240843