32221056 has 64 divisors (see below), whose sum is σ = 97822080. Its totient is φ = 9205248.

The previous prime is 32221051. The next prime is 32221067. The reversal of 32221056 is 65012223.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32221051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3306 + ... + 8681.

It is an arithmetic number, because the mean of its divisors is an integer number (1528470).

Almost surely, 2^32221056 is an apocalyptic number.

It is an amenable number.

32221056 is an abundant number, since it is smaller than the sum of its proper divisors (65601024).

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

32221056 is a wasteful number, since it uses less digits than its factorization.

32221056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12011 (or 11999 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 32221056 is about 5676.3593966556. The cubic root of 32221056 is about 318.2095845552.

Adding to 32221056 its reverse (65012223), we get a palindrome (97233279).

It can be divided in two parts, 3222 and 1056, that added together give a triangular number (4278 = T₉₂).

The spelling of 32221056 in words is "thirty-two million, two hundred twenty-one thousand, fifty-six".