33220422 has 32 divisors (see below), whose sum is σ = 75081600. Its totient is φ = 10884744.

The previous prime is 33220393. The next prime is 33220423. The reversal of 33220422 is 22402233.

It is a super-2 number, since 2×33220422² = 2207192875716168, 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 = 33220395 and 33220404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2028 + ... + 8399.

It is an arithmetic number, because the mean of its divisors is an integer number (2346300).

Almost surely, 2^33220422 is an apocalyptic number.

33220422 is an abundant number, since it is smaller than the sum of its proper divisors (41861178).

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

33220422 is a wasteful number, since it uses less digits than its factorization.

33220422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10497 (or 10491 counting only the distinct ones).

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

The square root of 33220422 is about 5763.7159888391. The cubic root of 33220422 is about 321.4660014824.

Adding to 33220422 its reverse (22402233), we get a palindrome (55622655).

The spelling of 33220422 in words is "thirty-three million, two hundred twenty thousand, four hundred twenty-two".