243678933 has 24 divisors (see below), whose sum is σ = 376053600. Its totient is φ = 151598304.

The previous prime is 243678923. The next prime is 243678943. The reversal of 243678933 is 339876342.

It is an interprime number because it is at equal distance from previous prime (243678923) and next prime (243678943).

It is not a de Polignac number, because 243678933 - 2¹⁶ = 243613397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243678923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 823 + ... + 22091.

It is an arithmetic number, because the mean of its divisors is an integer number (15668900).

Almost surely, 2^243678933 is an apocalyptic number.

It is an amenable number.

243678933 is a deficient number, since it is larger than the sum of its proper divisors (132374667).

243678933 is a wasteful number, since it uses less digits than its factorization.

243678933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21361 (or 21358 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 243678933 is about 15610.2188645771. The cubic root of 243678933 is about 624.6057742166.

The spelling of 243678933 in words is "two hundred forty-three million, six hundred seventy-eight thousand, nine hundred thirty-three".