423303400 has 192 divisors, whose sum is σ = 1147895280. Its totient is φ = 143769600.

The previous prime is 423303389. The next prime is 423303443. The reversal of 423303400 is 4303324.

It can be written as a sum of positive squares in 24 ways, for example, as 134235396 + 289068004 = 11586^2 + 17002^2 .

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, 2696122 + ... + 2696278.

Almost surely, 2^423303400 is an apocalyptic number.

423303400 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 423303400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573947640).

423303400 is an abundant number, since it is smaller than the sum of its proper divisors (724591880).

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

423303400 is a wasteful number, since it uses less digits than its factorization.

423303400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 423303400 is about 20574.3383854743. The cubic root of 423303400 is about 750.8455057278.

Adding to 423303400 its reverse (4303324), we get a palindrome (427606724).

The spelling of 423303400 in words is "four hundred twenty-three million, three hundred three thousand, four hundred".