423423504 has 240 divisors, whose sum is σ = 1436783040. Its totient is φ = 119024640.

The previous prime is 423423499. The next prime is 423423521. The reversal of 423423504 is 405324324.

423423504 is a `hidden beast` number, since 423 + 4 + 235 + 0 + 4 = 666.

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 47 ways as a sum of consecutive naturals, for example, 1756824 + ... + 1757064.

It is an arithmetic number, because the mean of its divisors is an integer number (5986596).

Almost surely, 2^423423504 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 423423504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718391520).

423423504 is an abundant number, since it is smaller than the sum of its proper divisors (1013359536).

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

423423504 is a wasteful number, since it uses less digits than its factorization.

423423504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 336 counting only the distinct ones).

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

The square root of 423423504 is about 20577.2569600518. The cubic root of 423423504 is about 750.9165115525.

Adding to 423423504 its reverse (405324324), we get a palindrome (828747828).

The spelling of 423423504 in words is "four hundred twenty-three million, four hundred twenty-three thousand, five hundred four".