243347328 has 240 divisors, whose sum is σ = 844192800. Its totient is φ = 69382656.

The previous prime is 243347311. The next prime is 243347339. The reversal of 243347328 is 823743342.

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 junction number, because it is equal to n+sod(n) for n = 243347292 and 243347301.

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 29 ways as a sum of consecutive naturals, for example, 507793 + ... + 508271.

It is an arithmetic number, because the mean of its divisors is an integer number (3517470).

Almost surely, 2^243347328 is an apocalyptic number.

243347328 is a gapful number since it is divisible by the number (28) 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 243347328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422096400).

243347328 is an abundant number, since it is smaller than the sum of its proper divisors (600845472).

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

243347328 is an equidigital number, since it uses as much as digits as its factorization.

243347328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 491 counting only the distinct ones).

The product of its digits is 96768, while the sum is 36.

The square root of 243347328 is about 15599.5938408665. The cubic root of 243347328 is about 624.3223186891.

The spelling of 243347328 in words is "two hundred forty-three million, three hundred forty-seven thousand, three hundred twenty-eight".