243879240 has 128 divisors (see below), whose sum is σ = 815339520. Its totient is φ = 57849600.

The previous prime is 243879221. The next prime is 243879257. The reversal of 243879240 is 42978342.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60075 + ... + 64005.

It is an arithmetic number, because the mean of its divisors is an integer number (6369840).

Almost surely, 2^243879240 is an apocalyptic number.

243879240 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 243879240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407669760).

243879240 is an abundant number, since it is smaller than the sum of its proper divisors (571460280).

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

243879240 is a wasteful number, since it uses less digits than its factorization.

243879240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003 (or 3999 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 243879240 is about 15616.6334400216. The cubic root of 243879240 is about 624.7768718182.

The spelling of 243879240 in words is "two hundred forty-three million, eight hundred seventy-nine thousand, two hundred forty".