33453420 has 192 divisors, whose sum is σ = 125991936. Its totient is φ = 6405120.

The previous prime is 33453391. The next prime is 33453421. The reversal of 33453420 is 2435433.

It is a super-2 number, since 2×33453420² = 2238262619392800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33453421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59782 + ... + 60338.

It is an arithmetic number, because the mean of its divisors is an integer number (656208).

Almost surely, 2^33453420 is an apocalyptic number.

33453420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33453420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62995968).

33453420 is an abundant number, since it is smaller than the sum of its proper divisors (92538516).

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

33453420 is a wasteful number, since it uses less digits than its factorization.

33453420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 33453420 is about 5783.8931525401. The cubic root of 33453420 is about 322.2158063636.

Adding to 33453420 its reverse (2435433), we get a palindrome (35888853).

The spelling of 33453420 in words is "thirty-three million, four hundred fifty-three thousand, four hundred twenty".