32021444 has 72 divisors (see below), whose sum is σ = 71080128. Its totient is φ = 12355200.

The previous prime is 32021443. The next prime is 32021449. The reversal of 32021444 is 44412023.

It is not an unprimeable number, because it can be changed into a prime (32021443) 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 23 ways as a sum of consecutive naturals, for example, 316994 + ... + 317094.

It is an arithmetic number, because the mean of its divisors is an integer number (987224).

Almost surely, 2^32021444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 32021444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35540064).

32021444 is an abundant number, since it is smaller than the sum of its proper divisors (39058684).

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

32021444 is a wasteful number, since it uses less digits than its factorization.

32021444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 32021444 is about 5658.7493317870. The cubic root of 32021444 is about 317.5511117004.

Adding to 32021444 its reverse (44412023), we get a palindrome (76433467).

The spelling of 32021444 in words is "thirty-two million, twenty-one thousand, four hundred forty-four".