243879480 has 288 divisors, whose sum is σ = 903127680. Its totient is φ = 56678400.

The previous prime is 243879479. The next prime is 243879487. The reversal of 243879480 is 84978342.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243879487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5948260 + ... + 5948300.

It is an arithmetic number, because the mean of its divisors is an integer number (3135860).

Almost surely, 2^243879480 is an apocalyptic number.

243879480 is a gapful number since it is divisible by the number (20) 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 243879480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (451563840).

243879480 is an abundant number, since it is smaller than the sum of its proper divisors (659248200).

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

243879480 is a wasteful number, since it uses less digits than its factorization.

243879480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 243879480 is about 15616.6411241342. The cubic root of 243879480 is about 624.7770767645. Note that the first 3 decimals are identical.

It can be divided in two parts, 2438 and 79480, that added together give a palindrome (81918).

The spelling of 243879480 in words is "two hundred forty-three million, eight hundred seventy-nine thousand, four hundred eighty".