423424320 has 224 divisors, whose sum is σ = 1484839296. Its totient is φ = 101376000.

The previous prime is 423424307. The next prime is 423424327. The reversal of 423424320 is 23424324.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423424327) 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 31 ways as a sum of consecutive naturals, for example, 1066362 + ... + 1066758.

Almost surely, 2^423424320 is an apocalyptic number.

423424320 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 423424320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (742419648).

423424320 is an abundant number, since it is smaller than the sum of its proper divisors (1061414976).

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

423424320 is a wasteful number, since it uses less digits than its factorization.

423424320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

The square root of 423424320 is about 20577.2767877579. The cubic root of 423424320 is about 750.9169939281.

Adding to 423424320 its reverse (23424324), we get a palindrome (446848644).

The spelling of 423424320 in words is "four hundred twenty-three million, four hundred twenty-four thousand, three hundred twenty".