423331400 has 96 divisors (see below), whose sum is σ = 1047254400. Its totient is φ = 158688000.

The previous prime is 423331387. The next prime is 423331417. The reversal of 423331400 is 4133324.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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, 383249 + ... + 384351.

It is an arithmetic number, because the mean of its divisors is an integer number (10908900).

Almost surely, 2^423331400 is an apocalyptic number.

423331400 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 423331400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523627200).

423331400 is an abundant number, since it is smaller than the sum of its proper divisors (623923000).

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

423331400 is a wasteful number, since it uses less digits than its factorization.

423331400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 423331400 is about 20575.0188335272. The cubic root of 423331400 is about 750.8620606076.

Adding to 423331400 its reverse (4133324), we get a palindrome (427464724).

The spelling of 423331400 in words is "four hundred twenty-three million, three hundred thirty-one thousand, four hundred".