133333944 has 64 divisors (see below), whose sum is σ = 366163200. Its totient is φ = 40271616.

The previous prime is 133333933. The next prime is 133333957. The reversal of 133333944 is 449333331.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4132 + ... + 16844.

It is an arithmetic number, because the mean of its divisors is an integer number (5721300).

Almost surely, 2^133333944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133333944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183081600).

133333944 is an abundant number, since it is smaller than the sum of its proper divisors (232829256).

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

133333944 is a wasteful number, since it uses less digits than its factorization.

133333944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12764 (or 12760 counting only the distinct ones).

The product of its digits is 34992, while the sum is 33.

The square root of 133333944 is about 11547.0318264046. The cubic root of 133333944 is about 510.8737348606.

The spelling of 133333944 in words is "one hundred thirty-three million, three hundred thirty-three thousand, nine hundred forty-four".