423578812 has 24 divisors (see below), whose sum is σ = 762451760. Its totient is φ = 205752960.

The previous prime is 423578801. The next prime is 423578819. The reversal of 423578812 is 218875324.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423578819) 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, 118264 + ... + 121792.

Almost surely, 2^423578812 is an apocalyptic number.

It is an amenable number.

423578812 is a deficient number, since it is larger than the sum of its proper divisors (338872948).

423578812 is a wasteful number, since it uses less digits than its factorization.

423578812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4381 (or 4379 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 423578812 is about 20581.0303920868. The cubic root of 423578812 is about 751.0083101770.

The spelling of 423578812 in words is "four hundred twenty-three million, five hundred seventy-eight thousand, eight hundred twelve".