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13489345 = 52697869
BaseRepresentation
bin110011011101…
…010011000001
3221101022220101
4303131103001
511423124340
61201042401
7222441352
oct63352301
927338811
1013489345
117683821
124626401
132a43b7c
141b11d29
1512b6c9a
hexcdd4c1

13489345 has 4 divisors (see below), whose sum is σ = 16187220. Its totient is φ = 10791472.

The previous prime is 13489331. The next prime is 13489351. The reversal of 13489345 is 54398431.

13489345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54398431 = 411326791.

It can be written as a sum of positive squares in 2 ways, for example, as 8503056 + 4986289 = 2916^2 + 2233^2 .

It is a cyclic number.

It is not a de Polignac number, because 13489345 - 211 = 13487297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348930 + ... + 1348939.

It is an arithmetic number, because the mean of its divisors is an integer number (4046805).

Almost surely, 213489345 is an apocalyptic number.

It is an amenable number.

13489345 is a deficient number, since it is larger than the sum of its proper divisors (2697875).

13489345 is an equidigital number, since it uses as much as digits as its factorization.

13489345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697874.

The product of its digits is 51840, while the sum is 37.

The square root of 13489345 is about 3672.7843661179. The cubic root of 13489345 is about 238.0474977584.

The spelling of 13489345 in words is "thirteen million, four hundred eighty-nine thousand, three hundred forty-five".

Divisors: 1 5 2697869 13489345