33130220 has 24 divisors (see below), whose sum is σ = 69682704. Its totient is φ = 13231296.

The previous prime is 33130217. The next prime is 33130231. The reversal of 33130220 is 2203133.

It is a super-2 number, since 2×33130220² = 2195222954496800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33130195 and 33130204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21599 + ... + 23081.

It is an arithmetic number, because the mean of its divisors is an integer number (2903446).

Almost surely, 2^33130220 is an apocalyptic number.

It is an amenable number.

33130220 is an abundant number, since it is smaller than the sum of its proper divisors (36552484).

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

33130220 is a wasteful number, since it uses less digits than its factorization.

33130220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609 (or 2607 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 33130220 is about 5755.8856833679. The cubic root of 33130220 is about 321.1747834219.

Adding to 33130220 its reverse (2203133), we get a palindrome (35333353).

The spelling of 33130220 in words is "thirty-three million, one hundred thirty thousand, two hundred twenty".