243406056 has 32 divisors (see below), whose sum is σ = 634973760. Its totient is φ = 77607552.

The previous prime is 243405989. The next prime is 243406063. The reversal of 243406056 is 650604342.

It is a super-3 number, since 3×243406056³ (a number of 26 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 219925 + ... + 221028.

It is an arithmetic number, because the mean of its divisors is an integer number (19842930).

Almost surely, 2^243406056 is an apocalyptic number.

It is an amenable number.

243406056 is an abundant number, since it is smaller than the sum of its proper divisors (391567704).

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

243406056 is a wasteful number, since it uses less digits than its factorization.

243406056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440985 (or 440981 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 243406056 is about 15601.4760840121. The cubic root of 243406056 is about 624.3725380639.

The spelling of 243406056 in words is "two hundred forty-three million, four hundred six thousand, fifty-six".