243550072 has 8 divisors (see below), whose sum is σ = 456656400. Its totient is φ = 121775032.

The previous prime is 243550067. The next prime is 243550081. The reversal of 243550072 is 270055342.

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

It is a super-3 number, since 3×243550072³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 243550072.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 15221872 + ... + 15221887.

It is an arithmetic number, because the mean of its divisors is an integer number (57082050).

Almost surely, 2^243550072 is an apocalyptic number.

It is an amenable number.

243550072 is a deficient number, since it is larger than the sum of its proper divisors (213106328).

243550072 is a wasteful number, since it uses less digits than its factorization.

243550072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30443765 (or 30443761 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 243550072 is about 15606.0908622243. The cubic root of 243550072 is about 624.4956545666.

The spelling of 243550072 in words is "two hundred forty-three million, five hundred fifty thousand, seventy-two".