423503400 has 96 divisors (see below), whose sum is σ = 1355270400. Its totient is φ = 109286400.

The previous prime is 423503387. The next prime is 423503401. The reversal of 423503400 is 4305324.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (423503401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7216 + ... + 29984.

It is an arithmetic number, because the mean of its divisors is an integer number (14117400).

Almost surely, 2^423503400 is an apocalyptic number.

423503400 is a gapful number since it is divisible by the number (40) 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 423503400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677635200).

423503400 is an abundant number, since it is smaller than the sum of its proper divisors (931767000).

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

423503400 is a wasteful number, since it uses less digits than its factorization.

423503400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22819 (or 22810 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 423503400 is about 20579.1982351111. The cubic root of 423503400 is about 750.9637388572.

Adding to 423503400 its reverse (4305324), we get a palindrome (427808724).

The spelling of 423503400 in words is "four hundred twenty-three million, five hundred three thousand, four hundred".