243256002 has 64 divisors (see below), whose sum is σ = 556882560. Its totient is φ = 70156800.

The previous prime is 243255989. The next prime is 243256037. The reversal of 243256002 is 200652342.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 138852 + ... + 140592.

It is an arithmetic number, because the mean of its divisors is an integer number (8701290).

Almost surely, 2^243256002 is an apocalyptic number.

243256002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 243256002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278441280).

243256002 is an abundant number, since it is smaller than the sum of its proper divisors (313626558).

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

243256002 is a wasteful number, since it uses less digits than its factorization.

243256002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 243256002 is about 15596.6663745815. Note that the first 3 decimals coincide. The cubic root of 243256002 is about 624.2442081209.

The spelling of 243256002 in words is "two hundred forty-three million, two hundred fifty-six thousand, two".