243428823020 has 24 divisors (see below), whose sum is σ = 522077137344. Its totient is φ = 95299794176.

The previous prime is 243428823019. The next prime is 243428823037. The reversal of 243428823020 is 20328824342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129482477 + ... + 129484356.

It is an arithmetic number, because the mean of its divisors is an integer number (21753214056).

Almost surely, 2^243428823020 is an apocalyptic number.

243428823020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243428823020 is an abundant number, since it is smaller than the sum of its proper divisors (278648314324).

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

243428823020 is a wasteful number, since it uses less digits than its factorization.

243428823020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258966889 (or 258966887 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 38.

The spelling of 243428823020 in words is "two hundred forty-three billion, four hundred twenty-eight million, eight hundred twenty-three thousand, twenty".