243046900 has 18 divisors (see below), whose sum is σ = 527411990. Its totient is φ = 97218720.

The previous prime is 243046847. The next prime is 243046919. The reversal of 243046900 is 9640342.

It can be written as a sum of positive squares in 3 ways, for example, as 51667344 + 191379556 = 7188^2 + 13834^2 .

It is a super-2 number, since 2×243046900² = 118143591199220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1215135 + ... + 1215334.

Almost surely, 2^243046900 is an apocalyptic number.

243046900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243046900 is an abundant number, since it is smaller than the sum of its proper divisors (284365090).

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

243046900 is a wasteful number, since it uses less digits than its factorization.

243046900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430483 (or 2430476 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 243046900 is about 15589.9615137434. The cubic root of 243046900 is about 624.0652908068.

The spelling of 243046900 in words is "two hundred forty-three million, forty-six thousand, nine hundred".