243828788 has 24 divisors (see below), whose sum is σ = 490392000. Its totient is φ = 103912128.

The previous prime is 243828787. The next prime is 243828799. The reversal of 243828788 is 887828342.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243828787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19313 + ... + 29336.

It is an arithmetic number, because the mean of its divisors is an integer number (20433000).

Almost surely, 2^243828788 is an apocalyptic number.

243828788 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

243828788 is an abundant number, since it is smaller than the sum of its proper divisors (246563212).

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

243828788 is a wasteful number, since it uses less digits than its factorization.

243828788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48839 (or 48837 counting only the distinct ones).

The product of its digits is 1376256, while the sum is 50.

The square root of 243828788 is about 15615.0180275272. The cubic root of 243828788 is about 624.7337857174.

The spelling of 243828788 in words is "two hundred forty-three million, eight hundred twenty-eight thousand, seven hundred eighty-eight".