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189413 = 727059
BaseRepresentation
bin101110001111100101
3100121211022
4232033211
522030123
64020525
71416140
oct561745
9317738
10189413
1111a344
1291745
13682a3
144d057
153b1c8
hex2e3e5

189413 has 4 divisors (see below), whose sum is σ = 216480. Its totient is φ = 162348.

The previous prime is 189407. The next prime is 189421. The reversal of 189413 is 314981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 314981 = 378513.

It is a cyclic number.

It is not a de Polignac number, because 189413 - 26 = 189349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 189413.

It is not an unprimeable number, because it can be changed into a prime (189433) 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 3 ways as a sum of consecutive naturals, for example, 13523 + ... + 13536.

It is an arithmetic number, because the mean of its divisors is an integer number (54120).

2189413 is an apocalyptic number.

It is an amenable number.

189413 is a deficient number, since it is larger than the sum of its proper divisors (27067).

189413 is an equidigital number, since it uses as much as digits as its factorization.

189413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27066.

The product of its digits is 864, while the sum is 26.

The square root of 189413 is about 435.2160383074. The cubic root of 189413 is about 57.4297061612.

The spelling of 189413 in words is "one hundred eighty-nine thousand, four hundred thirteen".

Divisors: 1 7 27059 189413