243235627920 has 160 divisors (see below), whose sum is σ = 840838266240. Its totient is φ = 64628513280.

The previous prime is 243235627891. The next prime is 243235627979. The reversal of 243235627920 is 29726532342.

243235627920 is a `hidden beast` number, since 2 + 4 + 3 + 2 + 356 + 279 + 20 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395055 + ... + 801585.

It is an arithmetic number, because the mean of its divisors is an integer number (5255239164).

Almost surely, 2^243235627920 is an apocalyptic number.

243235627920 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 243235627920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420419133120).

243235627920 is an abundant number, since it is smaller than the sum of its proper divisors (597602638320).

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

243235627920 is a wasteful number, since it uses less digits than its factorization.

243235627920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406830 (or 406818 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 243235627920 in words is "two hundred forty-three billion, two hundred thirty-five million, six hundred twenty-seven thousand, nine hundred twenty".