33240828 has 24 divisors (see below), whose sum is σ = 77772240. Its totient is φ = 11050240.

The previous prime is 33240811. The next prime is 33240829. The reversal of 33240828 is 82804233.

It is a super-2 number, since 2×33240828² = 2209905292251168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33240795 and 33240804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33240829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1108 + ... + 8228.

It is an arithmetic number, because the mean of its divisors is an integer number (3240510).

Almost surely, 2^33240828 is an apocalyptic number.

It is an amenable number.

33240828 is an abundant number, since it is smaller than the sum of its proper divisors (44531412).

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

33240828 is a wasteful number, since it uses less digits than its factorization.

33240828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517 (or 7515 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 33240828 is about 5765.4859292171. The cubic root of 33240828 is about 321.5318093213.

The spelling of 33240828 in words is "thirty-three million, two hundred forty thousand, eight hundred twenty-eight".