243921036 has 24 divisors (see below), whose sum is σ = 569483824. Its totient is φ = 81259200.

The previous prime is 243921019. The next prime is 243921037. The reversal of 243921036 is 630129342.

It is a junction number, because it is equal to n+sod(n) for n = 243920994 and 243921012.

It is not an unprimeable number, because it can be changed into a prime (243921037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19686 + ... + 29586.

Almost surely, 2^243921036 is an apocalyptic number.

It is an amenable number.

243921036 is an abundant number, since it is smaller than the sum of its proper divisors (325562788).

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

243921036 is a wasteful number, since it uses less digits than its factorization.

243921036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11961 (or 11959 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 243921036 is about 15617.9715712381. The cubic root of 243921036 is about 624.8125611790.

The spelling of 243921036 in words is "two hundred forty-three million, nine hundred twenty-one thousand, thirty-six".