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13115434 = 219345143
BaseRepresentation
bin110010000010…
…000000101010
3220200022222211
4302002000222
511324143214
61145035334
7216323263
oct62020052
926608884
1013115434
117448902
124485b4a
132942917
141a5596a
1512410c4
hexc8202a

13115434 has 8 divisors (see below), whose sum is σ = 20708640. Its totient is φ = 6212556.

The previous prime is 13115423. The next prime is 13115437. The reversal of 13115434 is 43451131.

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

It is not an unprimeable number, because it can be changed into a prime (13115437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172534 + ... + 172609.

It is an arithmetic number, because the mean of its divisors is an integer number (2588580).

Almost surely, 213115434 is an apocalyptic number.

13115434 is a deficient number, since it is larger than the sum of its proper divisors (7593206).

13115434 is a wasteful number, since it uses less digits than its factorization.

13115434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345164.

The product of its digits is 720, while the sum is 22.

The square root of 13115434 is about 3621.5237124724. The cubic root of 13115434 is about 235.8273778360.

Adding to 13115434 its reverse (43451131), we get a palindrome (56566565).

The spelling of 13115434 in words is "thirteen million, one hundred fifteen thousand, four hundred thirty-four".

Divisors: 1 2 19 38 345143 690286 6557717 13115434