423320424 has 64 divisors (see below), whose sum is σ = 1098532800. Its totient is φ = 135776256.

The previous prime is 423320413. The next prime is 423320459. The reversal of 423320424 is 424023324.

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

It is a junction number, because it is equal to n+sod(n) for n = 423320394 and 423320403.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244827 + ... + 246549.

It is an arithmetic number, because the mean of its divisors is an integer number (17164575).

Almost surely, 2^423320424 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 423320424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549266400).

423320424 is an abundant number, since it is smaller than the sum of its proper divisors (675212376).

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

423320424 is a wasteful number, since it uses less digits than its factorization.

423320424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114 (or 2110 counting only the distinct ones).

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

The square root of 423320424 is about 20574.7521005722. The cubic root of 423320424 is about 750.8555711817.

Adding to 423320424 its reverse (424023324), we get a palindrome (847343748).

The spelling of 423320424 in words is "four hundred twenty-three million, three hundred twenty thousand, four hundred twenty-four".