20441432 has 32 divisors (see below), whose sum is σ = 42448320. Its totient is φ = 9150240.

The previous prime is 20441419. The next prime is 20441437. The reversal of 20441432 is 23414402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20441437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4163 + ... + 7629.

It is an arithmetic number, because the mean of its divisors is an integer number (1326510).

Almost surely, 2^20441432 is an apocalyptic number.

20441432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20441432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21224160).

20441432 is an abundant number, since it is smaller than the sum of its proper divisors (22006888).

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

20441432 is a wasteful number, since it uses less digits than its factorization.

20441432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3551 (or 3547 counting only the distinct ones).

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

The square root of 20441432 is about 4521.2201892852. The cubic root of 20441432 is about 273.4242978355.

Adding to 20441432 its reverse (23414402), we get a palindrome (43855834).

The spelling of 20441432 in words is "twenty million, four hundred forty-one thousand, four hundred thirty-two".