243846720 has 336 divisors, whose sum is σ = 937077120. Its totient is φ = 59664384.

The previous prime is 243846689. The next prime is 243846749. The reversal of 243846720 is 27648342.

It is a super-2 number, since 2×243846720² = 118922445709516800, which contains 22 as substring.

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

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 47 ways as a sum of consecutive naturals, for example, 1460077 + ... + 1460243.

It is an arithmetic number, because the mean of its divisors is an integer number (2788920).

Almost surely, 2^243846720 is an apocalyptic number.

243846720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243846720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468538560).

243846720 is an abundant number, since it is smaller than the sum of its proper divisors (693230400).

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

243846720 is a wasteful number, since it uses less digits than its factorization.

243846720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 243846720 is about 15615.5922077903. The cubic root of 243846720 is about 624.7491003591.

The spelling of 243846720 in words is "two hundred forty-three million, eight hundred forty-six thousand, seven hundred twenty".