243397080 has 48 divisors (see below), whose sum is σ = 791041680. Its totient is φ = 64905792.

The previous prime is 243397069. The next prime is 243397093. The reversal of 243397080 is 80793342.

243397080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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, 337692 + ... + 338411.

It is an arithmetic number, because the mean of its divisors is an integer number (16480035).

Almost surely, 2^243397080 is an apocalyptic number.

243397080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243397080 is an abundant number, since it is smaller than the sum of its proper divisors (547644600).

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

243397080 is a wasteful number, since it uses less digits than its factorization.

243397080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676120 (or 676113 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 243397080 is about 15601.1884162714. The cubic root of 243397080 is about 624.3648630470.

The spelling of 243397080 in words is "two hundred forty-three million, three hundred ninety-seven thousand, eighty".