33133040 has 40 divisors (see below), whose sum is σ = 77801568. Its totient is φ = 13121280.

The previous prime is 33133033. The next prime is 33133063. The reversal of 33133040 is 4033133.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6230 + ... + 10250.

Almost surely, 2^33133040 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 33133040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38900784).

33133040 is an abundant number, since it is smaller than the sum of its proper divisors (44668528).

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

33133040 is a wasteful number, since it uses less digits than its factorization.

33133040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4137 (or 4131 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 33133040 is about 5756.1306447995. The cubic root of 33133040 is about 321.1838958193.

Adding to 33133040 its reverse (4033133), we get a palindrome (37166173).

The spelling of 33133040 in words is "thirty-three million, one hundred thirty-three thousand, forty".