4421632 has 48 divisors (see below), whose sum is σ = 9434880. Its totient is φ = 2064384.

The previous prime is 4421621. The next prime is 4421633. The reversal of 4421632 is 2361244.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4421633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34753 + ... + 34879.

It is an arithmetic number, because the mean of its divisors is an integer number (196560).

Almost surely, 2^4421632 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 4421632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4717440).

4421632 is an abundant number, since it is smaller than the sum of its proper divisors (5013248).

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

4421632 is a wasteful number, since it uses less digits than its factorization.

4421632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 146 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 4421632 is about 2102.7676999612. The cubic root of 4421632 is about 164.1323539936.

Adding to 4421632 its reverse (2361244), we get a palindrome (6782876).

The spelling of 4421632 in words is "four million, four hundred twenty-one thousand, six hundred thirty-two".