243423864 has 48 divisors (see below), whose sum is σ = 669126120. Its totient is φ = 79928640.

The previous prime is 243423827. The next prime is 243423871. The reversal of 243423864 is 468324342.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

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 in 11 ways as a sum of consecutive naturals, for example, 20407 + ... + 30054.

Almost surely, 2^243423864 is an apocalyptic number.

243423864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243423864 is an abundant number, since it is smaller than the sum of its proper divisors (425702256).

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

243423864 is a wasteful number, since it uses less digits than its factorization.

243423864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50540 (or 50533 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 243423864 is about 15602.0467888031. The cubic root of 243423864 is about 624.3877644106.

The spelling of 243423864 in words is "two hundred forty-three million, four hundred twenty-three thousand, eight hundred sixty-four".