33240222 has 24 divisors (see below), whose sum is σ = 73381464. Its totient is φ = 10870704.

The previous prime is 33240203. The next prime is 33240223. The reversal of 33240222 is 22204233.

It is a super-2 number, since 2×33240222² = 2209824717218568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 33240195 and 33240204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33240223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16468 + ... + 18375.

It is an arithmetic number, because the mean of its divisors is an integer number (3057561).

Almost surely, 2^33240222 is an apocalyptic number.

33240222 is an abundant number, since it is smaller than the sum of its proper divisors (40141242).

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

33240222 is a wasteful number, since it uses less digits than its factorization.

33240222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34904 (or 34901 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 33240222 is about 5765.4333748644. The cubic root of 33240222 is about 321.5298554042.

Adding to 33240222 its reverse (22204233), we get a palindrome (55444455).

The spelling of 33240222 in words is "thirty-three million, two hundred forty thousand, two hundred twenty-two".