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27439 = 231193
BaseRepresentation
bin110101100101111
31101122021
412230233
51334224
6331011
7142666
oct65457
941567
1027439
1119685
1213a67
13c649
149ddd
1581e4
hex6b2f

27439 has 4 divisors (see below), whose sum is σ = 28656. Its totient is φ = 26224.

The previous prime is 27437. The next prime is 27449. The reversal of 27439 is 93472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27439 - 21 = 27437 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574 + ... + 619.

It is an arithmetic number, because the mean of its divisors is an integer number (7164).

227439 is an apocalyptic number.

27439 is a deficient number, since it is larger than the sum of its proper divisors (1217).

27439 is a wasteful number, since it uses less digits than its factorization.

27439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216.

The product of its digits is 1512, while the sum is 25.

The square root of 27439 is about 165.6472154912. The cubic root of 27439 is about 30.1617192555.

It can be divided in two parts, 274 and 39, that added together give a palindrome (313).

The spelling of 27439 in words is "twenty-seven thousand, four hundred thirty-nine".

Divisors: 1 23 1193 27439