33242209 has 24 divisors (see below), whose sum is σ = 44985920. Its totient is φ = 23902560.

The previous prime is 33242171. The next prime is 33242219. The reversal of 33242209 is 90224233.

It is not a de Polignac number, because 33242209 - 2¹⁵ = 33209441 is a prime.

It is a super-2 number, since 2×33242209² = 2210088918399362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33242219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9502 + ... + 12520.

Almost surely, 2^33242209 is an apocalyptic number.

It is an amenable number.

33242209 is a deficient number, since it is larger than the sum of its proper divisors (11743711).

33242209 is a wasteful number, since it uses less digits than its factorization.

33242209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3061 (or 3050 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 33242209 is about 5765.6056923796. The cubic root of 33242209 is about 321.5362619709.

It can be divided in two parts, 33 and 242209, that added together give a palindrome (242242).

The spelling of 33242209 in words is "thirty-three million, two hundred forty-two thousand, two hundred nine".