33220442 has 4 divisors (see below), whose sum is σ = 49830666. Its totient is φ = 16610220.

The previous prime is 33220433. The next prime is 33220459. The reversal of 33220442 is 24402233.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27888961 + 5331481 = 5281^2 + 2309^2 .

It is a super-2 number, since 2×33220442² = 2207195533350728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8305109 + ... + 8305112.

Almost surely, 2^33220442 is an apocalyptic number.

33220442 is a deficient number, since it is larger than the sum of its proper divisors (16610224).

33220442 is a wasteful number, since it uses less digits than its factorization.

33220442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16610223.

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

The square root of 33220442 is about 5763.7177238307. The cubic root of 33220442 is about 321.4660659941.

Adding to 33220442 its reverse (24402233), we get a palindrome (57622675).

The spelling of 33220442 in words is "thirty-three million, two hundred twenty thousand, four hundred forty-two".