243437040 has 240 divisors, whose sum is σ = 1019506176. Its totient is φ = 50572800.

The previous prime is 243437027. The next prime is 243437041. The reversal of 243437040 is 40734342.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-3 number, since 3×243437040³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243436995 and 243437013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243437041) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 53245 + ... + 57635.

Almost surely, 2^243437040 is an apocalyptic number.

243437040 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 243437040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509753088).

243437040 is an abundant number, since it is smaller than the sum of its proper divisors (776069136).

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

243437040 is a wasteful number, since it uses less digits than its factorization.

243437040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4428 (or 4419 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 27.

The square root of 243437040 is about 15602.4690353803. The cubic root of 243437040 is about 624.3990297876.

The spelling of 243437040 in words is "two hundred forty-three million, four hundred thirty-seven thousand, forty".