243754728 has 64 divisors (see below), whose sum is σ = 697714560. Its totient is φ = 69517056.

The previous prime is 243754723. The next prime is 243754729. The reversal of 243754728 is 827457342.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 243754728.

It is not an unprimeable number, because it can be changed into a prime (243754723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128926 + ... + 130802.

It is an arithmetic number, because the mean of its divisors is an integer number (10901790).

Almost surely, 2^243754728 is an apocalyptic number.

243754728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

243754728 is an abundant number, since it is smaller than the sum of its proper divisors (453959832).

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

243754728 is a wasteful number, since it uses less digits than its factorization.

243754728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666 (or 2662 counting only the distinct ones).

The product of its digits is 376320, while the sum is 42.

The square root of 243754728 is about 15612.6464124440. The cubic root of 243754728 is about 624.6705275739.

The spelling of 243754728 in words is "two hundred forty-three million, seven hundred fifty-four thousand, seven hundred twenty-eight".