243527928 has 128 divisors (see below), whose sum is σ = 718848000. Its totient is φ = 67317120.

The previous prime is 243527923. The next prime is 243527939. The reversal of 243527928 is 829725342.

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 243527928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243527923) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 782893 + ... + 783203.

It is an arithmetic number, because the mean of its divisors is an integer number (5616000).

Almost surely, 2^243527928 is an apocalyptic number.

243527928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243527928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359424000).

243527928 is an abundant number, since it is smaller than the sum of its proper divisors (475320072).

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

243527928 is a wasteful number, since it uses less digits than its factorization.

243527928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 461 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 243527928 is about 15605.3813795114. The cubic root of 243527928 is about 624.4767272459.

The spelling of 243527928 in words is "two hundred forty-three million, five hundred twenty-seven thousand, nine hundred twenty-eight".