1423444432 has 40 divisors (see below), whose sum is σ = 2908296000. Its totient is φ = 673051392.

The previous prime is 1423444417. The next prime is 1423444441. The reversal of 1423444432 is 2344443241.

It is a junction number, because it is equal to n+sod(n) for n = 1423444394 and 1423444403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178188 + ... + 186004.

It is an arithmetic number, because the mean of its divisors is an integer number (72707400).

Almost surely, 2^1423444432 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 1423444432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1454148000).

1423444432 is an abundant number, since it is smaller than the sum of its proper divisors (1484851568).

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

1423444432 is a wasteful number, since it uses less digits than its factorization.

1423444432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443 (or 8437 counting only the distinct ones).

The product of its digits is 36864, while the sum is 31.

The square root of 1423444432 is about 37728.5625488170. The cubic root of 1423444432 is about 1124.8989359747.

Adding to 1423444432 its reverse (2344443241), we get a palindrome (3767887673).

The spelling of 1423444432 in words is "one billion, four hundred twenty-three million, four hundred forty-four thousand, four hundred thirty-two".