243724416 has 64 divisors (see below), whose sum is σ = 697206720. Its totient is φ = 74990592.

The previous prime is 243724391. The next prime is 243724421. The reversal of 243724416 is 614427342.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

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, 19420 + ... + 29403.

It is an arithmetic number, because the mean of its divisors is an integer number (10893855).

Almost surely, 2^243724416 is an apocalyptic number.

243724416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

243724416 is an abundant number, since it is smaller than the sum of its proper divisors (453482304).

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

243724416 is a wasteful number, since it uses less digits than its factorization.

243724416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48853 (or 48841 counting only the distinct ones).

The product of its digits is 32256, while the sum is 33.

The square root of 243724416 is about 15611.6756307579. The cubic root of 243724416 is about 624.6446329678.

The spelling of 243724416 in words is "two hundred forty-three million, seven hundred twenty-four thousand, four hundred sixteen".