33424420 has 24 divisors (see below), whose sum is σ = 73886400. Its totient is φ = 12665952.

The previous prime is 33424411. The next prime is 33424421. The reversal of 33424420 is 2442433.

It is a super-2 number, since 2×33424420² = 2234383704672800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33424391 and 33424400.

It is not an unprimeable number, because it can be changed into a prime (33424421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43600 + ... + 44359.

It is an arithmetic number, because the mean of its divisors is an integer number (3078600).

Almost surely, 2^33424420 is an apocalyptic number.

It is an amenable number.

33424420 is an abundant number, since it is smaller than the sum of its proper divisors (40461980).

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

33424420 is a wasteful number, since it uses less digits than its factorization.

33424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87987 (or 87985 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 33424420 is about 5781.3856470573. The cubic root of 33424420 is about 322.1226722905.

Adding to 33424420 its reverse (2442433), we get a palindrome (35866853).

The spelling of 33424420 in words is "thirty-three million, four hundred twenty-four thousand, four hundred twenty".