33420424 has 8 divisors (see below), whose sum is σ = 62663310. Its totient is φ = 16710208.

The previous prime is 33420407. The next prime is 33420451. The reversal of 33420424 is 42402433.

It can be written as a sum of positive squares in only one way, i.e., 30802500 + 2617924 = 5550^2 + 1618^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×33420424² = 2233849480679552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33420395 and 33420404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2088769 + ... + 2088784.

Almost surely, 2^33420424 is an apocalyptic number.

It is an amenable number.

33420424 is a deficient number, since it is larger than the sum of its proper divisors (29242886).

33420424 is a wasteful number, since it uses less digits than its factorization.

33420424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177559 (or 4177555 counting only the distinct ones).

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

The square root of 33420424 is about 5781.0400448362. The cubic root of 33420424 is about 322.1098348352.

Adding to 33420424 its reverse (42402433), we get a palindrome (75822857).

Subtracting 33420424 from its reverse (42402433), we obtain a square (8982009 = 2997²).

The spelling of 33420424 in words is "thirty-three million, four hundred twenty thousand, four hundred twenty-four".