32443140 has 72 divisors (see below), whose sum is σ = 96550272. Its totient is φ = 8138240.

The previous prime is 32443139. The next prime is 32443163. The reversal of 32443140 is 4134423.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16405 + ... + 18275.

It is an arithmetic number, because the mean of its divisors is an integer number (1340976).

Almost surely, 2^32443140 is an apocalyptic number.

32443140 is a gapful number since it is divisible by the number (30) 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 32443140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48275136).

32443140 is an abundant number, since it is smaller than the sum of its proper divisors (64107132).

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

32443140 is a wasteful number, since it uses less digits than its factorization.

32443140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 32443140 is about 5695.8879904717. The cubic root of 32443140 is about 318.9389990242.

Adding to 32443140 its reverse (4134423), we get a palindrome (36577563).

The spelling of 32443140 in words is "thirty-two million, four hundred forty-three thousand, one hundred forty".