423344020 has 24 divisors (see below), whose sum is σ = 969843168. Its totient is φ = 153943200.

The previous prime is 423344011. The next prime is 423344023. The reversal of 423344020 is 20443324.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 423343982 and 423344000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423344023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 961926 + ... + 962365.

It is an arithmetic number, because the mean of its divisors is an integer number (40410132).

Almost surely, 2^423344020 is an apocalyptic number.

It is an amenable number.

423344020 is an abundant number, since it is smaller than the sum of its proper divisors (546499148).

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

423344020 is a wasteful number, since it uses less digits than its factorization.

423344020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924311 (or 1924309 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 423344020 is about 20575.3255138285. The cubic root of 423344020 is about 750.8695218897.

Adding to 423344020 its reverse (20443324), we get a palindrome (443787344).

It can be divided in two parts, 423 and 344020, that added together give a palindrome (344443).

The spelling of 423344020 in words is "four hundred twenty-three million, three hundred forty-four thousand, twenty".