133333266 has 64 divisors (see below), whose sum is σ = 303077376. Its totient is φ = 38750400.

The previous prime is 133333253. The next prime is 133333289. The reversal of 133333266 is 662333331.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164001 + ... + 164811.

It is an arithmetic number, because the mean of its divisors is an integer number (4735584).

Almost surely, 2^133333266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133333266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151538688).

133333266 is an abundant number, since it is smaller than the sum of its proper divisors (169744110).

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

133333266 is a wasteful number, since it uses less digits than its factorization.

133333266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 927.

The product of its digits is 17496, while the sum is 30.

The square root of 133333266 is about 11547.0024681733. The cubic root of 133333266 is about 510.8728689321.

Adding to 133333266 its reverse (662333331), we get a palindrome (795666597).

The spelling of 133333266 in words is "one hundred thirty-three million, three hundred thirty-three thousand, two hundred sixty-six".