33005240 has 16 divisors (see below), whose sum is σ = 74261880. Its totient is φ = 13202080.

The previous prime is 33005239. The next prime is 33005243. The reversal of 33005240 is 4250033.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33005243) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 412526 + ... + 412605.

Almost surely, 2^33005240 is an apocalyptic number.

It is an amenable number.

33005240 is an abundant number, since it is smaller than the sum of its proper divisors (41256640).

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

33005240 is a wasteful number, since it uses less digits than its factorization.

33005240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825142 (or 825138 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 17.

The square root of 33005240 is about 5745.0187118929. The cubic root of 33005240 is about 320.7704093535.

Adding to 33005240 its reverse (4250033), we get a palindrome (37255273).

The spelling of 33005240 in words is "thirty-three million, five thousand, two hundred forty".