32221366 has 4 divisors (see below), whose sum is σ = 48332052. Its totient is φ = 16110682.

The previous prime is 32221361. The next prime is 32221393. The reversal of 32221366 is 66312223.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 32221366.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32221361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8055340 + ... + 8055343.

It is an arithmetic number, because the mean of its divisors is an integer number (12083013).

Almost surely, 2^32221366 is an apocalyptic number.

32221366 is a deficient number, since it is larger than the sum of its proper divisors (16110686).

32221366 is a wasteful number, since it uses less digits than its factorization.

32221366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16110685.

The product of its digits is 2592, while the sum is 25.

The square root of 32221366 is about 5676.3867028243. The cubic root of 32221366 is about 318.2106050541.

Adding to 32221366 its reverse (66312223), we get a palindrome (98533589).

The spelling of 32221366 in words is "thirty-two million, two hundred twenty-one thousand, three hundred sixty-six".