133808 has 10 divisors (see below), whose sum is σ = 259284. Its totient is φ = 66896.

The previous prime is 133801. The next prime is 133811. The reversal of 133808 is 808331.

It is not an unprimeable number, because it can be changed into a prime (133801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4166 + ... + 4197.

2¹³³⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

133808 is a deficient number, since it is larger than the sum of its proper divisors (125476).

133808 is an equidigital number, since it uses as much as digits as its factorization.

133808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371 (or 8365 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 133808 is about 365.7977583310. The cubic root of 133808 is about 51.1478472855.

The spelling of 133808 in words is "one hundred thirty-three thousand, eight hundred eight".