243809796 has 24 divisors (see below), whose sum is σ = 569380000. Its totient is φ = 81199872.

The previous prime is 243809779. The next prime is 243809807. The reversal of 243809796 is 697908342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6855 + ... + 23121.

Almost surely, 2^243809796 is an apocalyptic number.

It is an amenable number.

243809796 is an abundant number, since it is smaller than the sum of its proper divisors (325570204).

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

243809796 is a wasteful number, since it uses less digits than its factorization.

243809796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17523 (or 17521 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 243809796 is about 15614.4098831816. The cubic root of 243809796 is about 624.7175649746.

The spelling of 243809796 in words is "two hundred forty-three million, eight hundred nine thousand, seven hundred ninety-six".