243803020 has 12 divisors (see below), whose sum is σ = 511986384. Its totient is φ = 97521200.

The previous prime is 243803011. The next prime is 243803023. The reversal of 243803020 is 20308342.

It is a super-2 number, since 2×243803020² = 118879825122240800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243802982 and 243803000.

It is not an unprimeable number, because it can be changed into a prime (243803023) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6095056 + ... + 6095095.

It is an arithmetic number, because the mean of its divisors is an integer number (42665532).

Almost surely, 2^243803020 is an apocalyptic number.

243803020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243803020 is an abundant number, since it is smaller than the sum of its proper divisors (268183364).

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

243803020 is a wasteful number, since it uses less digits than its factorization.

243803020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12190160 (or 12190158 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 243803020 is about 15614.1929026127. The cubic root of 243803020 is about 624.7117775049.

The spelling of 243803020 in words is "two hundred forty-three million, eight hundred three thousand, twenty".