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13144535 = 513918913
BaseRepresentation
bin110010001001…
…000111010111
3220201210220122
4302021013113
511331111120
61145422155
7216504155
oct62110727
926653818
1013144535
117468758
12449a95b
132952c41
141a623d5
151249a25
hexc891d7

13144535 has 8 divisors (see below), whose sum is σ = 15887760. Its totient is φ = 10439424.

The previous prime is 13144531. The next prime is 13144543. The reversal of 13144535 is 53544131.

13144535 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13144535 - 22 = 13144531 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8762 + ... + 10151.

It is an arithmetic number, because the mean of its divisors is an integer number (1985970).

Almost surely, 213144535 is an apocalyptic number.

13144535 is a deficient number, since it is larger than the sum of its proper divisors (2743225).

13144535 is a wasteful number, since it uses less digits than its factorization.

13144535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19057.

The product of its digits is 3600, while the sum is 26.

The square root of 13144535 is about 3625.5392702328. The cubic root of 13144535 is about 236.0016697670.

Adding to 13144535 its reverse (53544131), we get a palindrome (66688666).

The spelling of 13144535 in words is "thirteen million, one hundred forty-four thousand, five hundred thirty-five".

Divisors: 1 5 139 695 18913 94565 2628907 13144535