243650380 has 24 divisors (see below), whose sum is σ = 516736080. Its totient is φ = 96494400.

The previous prime is 243650377. The next prime is 243650411. The reversal of 243650380 is 83056342.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58290 + ... + 62329.

It is an arithmetic number, because the mean of its divisors is an integer number (21530670).

Almost surely, 2^243650380 is an apocalyptic number.

243650380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243650380 is an abundant number, since it is smaller than the sum of its proper divisors (273085700).

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

243650380 is a wasteful number, since it uses less digits than its factorization.

243650380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120729 (or 120727 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 243650380 is about 15609.3042766166. The cubic root of 243650380 is about 624.5813772706.

The spelling of 243650380 in words is "two hundred forty-three million, six hundred fifty thousand, three hundred eighty".