135188 has 6 divisors (see below), whose sum is σ = 236586. Its totient is φ = 67592.
The previous prime is 135181. The next prime is 135193. The reversal of 135188 is 881531.
135188 is nontrivially palindromic in base 11.
It can be written as a sum of positive squares in only one way, i.e., 110224 + 24964 = 332^2 + 158^2 .
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (135181) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16895 + ... + 16902.
It is an arithmetic number, because the mean of its divisors is an integer number (39431).
2135188 is an apocalyptic number.
It is an amenable number.
135188 is a deficient number, since it is larger than the sum of its proper divisors (101398).
135188 is a wasteful number, since it uses less digits than its factorization.
135188 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 33801 (or 33799 counting only the distinct ones).
The product of its digits is 960, while the sum is 26.
The square root of 135188 is about 367.6792080061. The cubic root of 135188 is about 51.3230803533.
It can be divided in two parts, 135 and 188, that added together give a palindrome (323).
The spelling of 135188 in words is "one hundred thirty-five thousand, one hundred eighty-eight".
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