243779020 has 12 divisors (see below), whose sum is σ = 511935984. Its totient is φ = 97511600.

The previous prime is 243778993. The next prime is 243779027. The reversal of 243779020 is 20977342.

It is not an unprimeable number, because it can be changed into a prime (243779027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6094456 + ... + 6094495.

It is an arithmetic number, because the mean of its divisors is an integer number (42661332).

Almost surely, 2^243779020 is an apocalyptic number.

243779020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243779020 is an abundant number, since it is smaller than the sum of its proper divisors (268156964).

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

243779020 is a wasteful number, since it uses less digits than its factorization.

243779020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12188960 (or 12188958 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 243779020 is about 15613.4243521401. The cubic root of 243779020 is about 624.6912779302.

The spelling of 243779020 in words is "two hundred forty-three million, seven hundred seventy-nine thousand, twenty".