33220350 has 36 divisors (see below), whose sum is σ = 89253216. Its totient is φ = 8858640.

The previous prime is 33220337. The next prime is 33220351. The reversal of 33220350 is 5302233.

It is a super-2 number, since 2×33220350² = 2207183308245000, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36462 + ... + 37361.

It is an arithmetic number, because the mean of its divisors is an integer number (2479256).

Almost surely, 2^33220350 is an apocalyptic number.

33220350 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33220350 is an abundant number, since it is smaller than the sum of its proper divisors (56032866).

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

33220350 is a wasteful number, since it uses less digits than its factorization.

33220350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73841 (or 73833 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 33220350 is about 5763.7097428653. The cubic root of 33220350 is about 321.4657692400.

Adding to 33220350 its reverse (5302233), we get a palindrome (38522583).

The spelling of 33220350 in words is "thirty-three million, two hundred twenty thousand, three hundred fifty".