243897078 has 8 divisors (see below), whose sum is σ = 487794168. Its totient is φ = 81299024.

The previous prime is 243897067. The next prime is 243897109. The reversal of 243897078 is 870798342.

It is a sphenic number, since it is the product of 3 distinct primes.

243897078 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20324751 + ... + 20324762.

It is an arithmetic number, because the mean of its divisors is an integer number (60974271).

Almost surely, 2^243897078 is an apocalyptic number.

243897078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

243897078 is a wasteful number, since it uses less digits than its factorization.

243897078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40649518.

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 243897078 is about 15617.2045513914. The cubic root of 243897078 is about 624.7921040812.

The spelling of 243897078 in words is "two hundred forty-three million, eight hundred ninety-seven thousand, seventy-eight".