33240285 has 24 divisors (see below), whose sum is σ = 62049624. Its totient is φ = 16364160.

The previous prime is 33240271. The next prime is 33240289. The reversal of 33240285 is 58204233.

It can be written as a sum of positive squares in 4 ways, for example, as 131769 + 33108516 = 363^2 + 5754^2 .

It is not a de Polignac number, because 33240285 - 2⁴ = 33240269 is a prime.

It is a super-2 number, since 2×33240285² = 2209833093762450, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33240289) 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 23 ways as a sum of consecutive naturals, for example, 27826 + ... + 28995.

It is an arithmetic number, because the mean of its divisors is an integer number (2585401).

Almost surely, 2^33240285 is an apocalyptic number.

It is an amenable number.

33240285 is a deficient number, since it is larger than the sum of its proper divisors (28809339).

33240285 is a wasteful number, since it uses less digits than its factorization.

33240285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56845 (or 56842 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 33240285 is about 5765.4388384580. The cubic root of 33240285 is about 321.5300585353.

The spelling of 33240285 in words is "thirty-three million, two hundred forty thousand, two hundred eighty-five".