33040220 has 12 divisors (see below), whose sum is σ = 69384504. Its totient is φ = 13216080.

The previous prime is 33040127. The next prime is 33040229. The reversal of 33040220 is 2204033.

It is a super-2 number, since 2×33040220² = 2183312275296800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33040195 and 33040204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33040229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825986 + ... + 826025.

It is an arithmetic number, because the mean of its divisors is an integer number (5782042).

Almost surely, 2^33040220 is an apocalyptic number.

It is an amenable number.

33040220 is an abundant number, since it is smaller than the sum of its proper divisors (36344284).

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

33040220 is a wasteful number, since it uses less digits than its factorization.

33040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652020 (or 1652018 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 33040220 is about 5748.0622821956. The cubic root of 33040220 is about 320.8836902273.

Adding to 33040220 its reverse (2204033), we get a palindrome (35244253).

The spelling of 33040220 in words is "thirty-three million, forty thousand, two hundred twenty".