33420224 has 14 divisors (see below), whose sum is σ = 66318384. Its totient is φ = 16710080.

The previous prime is 33420217. The next prime is 33420241. The reversal of 33420224 is 42202433.

It is a super-2 number, since 2×33420224² = 2233822744420352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33420196 and 33420205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 261032 + ... + 261159.

Almost surely, 2^33420224 is an apocalyptic number.

It is an amenable number.

33420224 is a deficient number, since it is larger than the sum of its proper divisors (32898160).

33420224 is an equidigital number, since it uses as much as digits as its factorization.

33420224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522203 (or 522193 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 33420224 is about 5781.0227468848. The cubic root of 33420224 is about 322.1091922930.

Adding to 33420224 its reverse (42202433), we get a palindrome (75622657).

The spelling of 33420224 in words is "thirty-three million, four hundred twenty thousand, two hundred twenty-four".