243900940 has 48 divisors (see below), whose sum is σ = 520914240. Its totient is φ = 95912960.

The previous prime is 243900883. The next prime is 243900941. The reversal of 243900940 is 49009342.

It is not an unprimeable number, because it can be changed into a prime (243900941) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 467880 + ... + 468400.

It is an arithmetic number, because the mean of its divisors is an integer number (10852380).

Almost surely, 2^243900940 is an apocalyptic number.

243900940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243900940 is an abundant number, since it is smaller than the sum of its proper divisors (277013300).

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

243900940 is a wasteful number, since it uses less digits than its factorization.

243900940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 243900940 is about 15617.3281965898. The cubic root of 243900940 is about 624.7954018307.

The spelling of 243900940 in words is "two hundred forty-three million, nine hundred thousand, nine hundred forty".