133085808 has 80 divisors (see below), whose sum is σ = 387475200. Its totient is φ = 43727040.

The previous prime is 133085791. The next prime is 133085837. The reversal of 133085808 is 808580331.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28503 + ... + 32841.

It is an arithmetic number, because the mean of its divisors is an integer number (4843440).

Almost surely, 2^133085808 is an apocalyptic number.

133085808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133085808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193737600).

133085808 is an abundant number, since it is smaller than the sum of its proper divisors (254389392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133085808 is a wasteful number, since it uses less digits than its factorization.

133085808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4427 (or 4415 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 133085808 is about 11536.2822434266. The cubic root of 133085808 is about 510.5566241023.

The spelling of 133085808 in words is "one hundred thirty-three million, eighty-five thousand, eight hundred eight".