33133420 has 24 divisors (see below), whose sum is σ = 71826048. Its totient is φ = 12825600.

The previous prime is 33133393. The next prime is 33133421. The reversal of 33133420 is 2433133.

It is not an unprimeable number, because it can be changed into a prime (33133421) 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, 26101 + ... + 27340.

It is an arithmetic number, because the mean of its divisors is an integer number (2992752).

Almost surely, 2^33133420 is an apocalyptic number.

It is an amenable number.

33133420 is an abundant number, since it is smaller than the sum of its proper divisors (38692628).

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

33133420 is a wasteful number, since it uses less digits than its factorization.

33133420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53481 (or 53479 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 33133420 is about 5756.1636529897. The cubic root of 33133420 is about 321.1851236915.

Adding to 33133420 its reverse (2433133), we get a palindrome (35566553).

The spelling of 33133420 in words is "thirty-three million, one hundred thirty-three thousand, four hundred twenty".