423544032 has 96 divisors (see below), whose sum is σ = 1268820000. Its totient is φ = 137355264.

The previous prime is 423544027. The next prime is 423544049. The reversal of 423544032 is 230445324.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 423543987 and 423544005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25344 + ... + 38592.

It is an arithmetic number, because the mean of its divisors is an integer number (13216875).

Almost surely, 2^423544032 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 423544032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634410000).

423544032 is an abundant number, since it is smaller than the sum of its proper divisors (845275968).

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

423544032 is a wasteful number, since it uses less digits than its factorization.

423544032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13305 (or 13291 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 423544032 is about 20580.1854219052. The cubic root of 423544032 is about 750.9877545502.

Adding to 423544032 its reverse (230445324), we get a palindrome (653989356).

The spelling of 423544032 in words is "four hundred twenty-three million, five hundred forty-four thousand, thirty-two".