33420222 has 32 divisors (see below), whose sum is σ = 81020160. Its totient is φ = 10127160.

The previous prime is 33420217. The next prime is 33420241. The reversal of 33420222 is 22202433.

It is a super-2 number, since 2×33420222² = 2233822477058568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 33420195 and 33420204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27538 + ... + 28725.

It is an arithmetic number, because the mean of its divisors is an integer number (2531880).

Almost surely, 2^33420222 is an apocalyptic number.

33420222 is an abundant number, since it is smaller than the sum of its proper divisors (47599938).

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

33420222 is a wasteful number, since it uses less digits than its factorization.

33420222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56285 (or 56279 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 33420222 is about 5781.0225739051. The cubic root of 33420222 is about 322.1091858676.

Adding to 33420222 its reverse (22202433), we get a palindrome (55622655).

The spelling of 33420222 in words is "thirty-three million, four hundred twenty thousand, two hundred twenty-two".