243740450 has 24 divisors (see below), whose sum is σ = 453787920. Its totient is φ = 97403600.

The previous prime is 243740443. The next prime is 243740461. The reversal of 243740450 is 54047342.

243740450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79445 + ... + 82455.

It is an arithmetic number, because the mean of its divisors is an integer number (18907830).

Almost surely, 2^243740450 is an apocalyptic number.

243740450 is a deficient number, since it is larger than the sum of its proper divisors (210047470).

243740450 is a wasteful number, since it uses less digits than its factorization.

243740450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4642 (or 4637 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 243740450 is about 15612.1891482265. The cubic root of 243740450 is about 624.6583305866.

Adding to 243740450 its reverse (54047342), we get a palindrome (297787792).

The spelling of 243740450 in words is "two hundred forty-three million, seven hundred forty thousand, four hundred fifty".