133286 has 4 divisors (see below), whose sum is σ = 199932. Its totient is φ = 66642.

The previous prime is 133283. The next prime is 133303. The reversal of 133286 is 682331.

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

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33320 + ... + 33323.

It is an arithmetic number, because the mean of its divisors is an integer number (49983).

2¹³³²⁸⁶ is an apocalyptic number.

133286 is a deficient number, since it is larger than the sum of its proper divisors (66646).

133286 is an equidigital number, since it uses as much as digits as its factorization.

133286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66645.

The product of its digits is 864, while the sum is 23.

The square root of 133286 is about 365.0835520809. The cubic root of 133286 is about 51.0812494474.

The spelling of 133286 in words is "one hundred thirty-three thousand, two hundred eighty-six".