33221444 has 6 divisors (see below), whose sum is σ = 58137534. Its totient is φ = 16610720.

The previous prime is 33221431. The next prime is 33221459. The reversal of 33221444 is 44412233.

It can be written as a sum of positive squares in only one way, i.e., 25381444 + 7840000 = 5038^2 + 2800^2 .

It is a super-2 number, since 2×33221444² = 2207328682890272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4152677 + ... + 4152684.

It is an arithmetic number, because the mean of its divisors is an integer number (9689589).

Almost surely, 2^33221444 is an apocalyptic number.

It is an amenable number.

33221444 is a deficient number, since it is larger than the sum of its proper divisors (24916090).

33221444 is a wasteful number, since it uses less digits than its factorization.

33221444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8305365 (or 8305363 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 33221444 is about 5763.8046462385. The cubic root of 33221444 is about 321.4692979977.

Adding to 33221444 its reverse (44412233), we get a palindrome (77633677).

The spelling of 33221444 in words is "thirty-three million, two hundred twenty-one thousand, four hundred forty-four".