423205344 has 96 divisors (see below), whose sum is σ = 1307003040. Its totient is φ = 132765696.

The previous prime is 423205339. The next prime is 423205351. The reversal of 423205344 is 443502324.

423205344 is a `hidden beast` number, since 423 + 205 + 34 + 4 = 666.

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 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, 282 + ... + 29094.

It is an arithmetic number, because the mean of its divisors is an integer number (13614615).

Almost surely, 2^423205344 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 423205344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (653501520).

423205344 is an abundant number, since it is smaller than the sum of its proper divisors (883797696).

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

423205344 is a wasteful number, since it uses less digits than its factorization.

423205344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28849 (or 28835 counting only the distinct ones).

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

The square root of 423205344 is about 20571.9552789714. The cubic root of 423205344 is about 750.7875247835.

Adding to 423205344 its reverse (443502324), we get a palindrome (866707668).

The spelling of 423205344 in words is "four hundred twenty-three million, two hundred five thousand, three hundred forty-four".