243895972 has 24 divisors (see below), whose sum is σ = 449971200. Its totient is φ = 115500480.

The previous prime is 243895963. The next prime is 243895973. The reversal of 243895972 is 279598342.

It is not an unprimeable number, because it can be changed into a prime (243895973) 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, 15097 + ... + 26752.

It is an arithmetic number, because the mean of its divisors is an integer number (18748800).

Almost surely, 2^243895972 is an apocalyptic number.

It is an amenable number.

243895972 is a deficient number, since it is larger than the sum of its proper divisors (206075228).

243895972 is a wasteful number, since it uses less digits than its factorization.

243895972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41931 (or 41929 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 243895972 is about 15617.1691416851. The cubic root of 243895972 is about 624.7911596649.

The spelling of 243895972 in words is "two hundred forty-three million, eight hundred ninety-five thousand, nine hundred seventy-two".