423195820 has 12 divisors (see below), whose sum is σ = 888711264. Its totient is φ = 169278320.

The previous prime is 423195793. The next prime is 423195827. The reversal of 423195820 is 28591324.

It is not an unprimeable number, because it can be changed into a prime (423195827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10579876 + ... + 10579915.

It is an arithmetic number, because the mean of its divisors is an integer number (74059272).

Almost surely, 2^423195820 is an apocalyptic number.

It is an amenable number.

423195820 is an abundant number, since it is smaller than the sum of its proper divisors (465515444).

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

423195820 is a wasteful number, since it uses less digits than its factorization.

423195820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21159800 (or 21159798 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 423195820 is about 20571.7237974847. The cubic root of 423195820 is about 750.7818927232.

The spelling of 423195820 in words is "four hundred twenty-three million, one hundred ninety-five thousand, eight hundred twenty".