243044072 has 8 divisors (see below), whose sum is σ = 455707650. Its totient is φ = 121522032.

The previous prime is 243044071. The next prime is 243044089. The reversal of 243044072 is 270440342.

It can be written as a sum of positive squares in only one way, i.e., 168636196 + 74407876 = 12986^2 + 8626^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (243044071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15190247 + ... + 15190262.

Almost surely, 2^243044072 is an apocalyptic number.

It is an amenable number.

243044072 is a deficient number, since it is larger than the sum of its proper divisors (212663578).

243044072 is a wasteful number, since it uses less digits than its factorization.

243044072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30380515 (or 30380511 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 243044072 is about 15589.8708140895. The cubic root of 243044072 is about 624.0628703364.

The spelling of 243044072 in words is "two hundred forty-three million, forty-four thousand, seventy-two".