243486730 has 8 divisors (see below), whose sum is σ = 438276132. Its totient is φ = 97394688.

The previous prime is 243486721. The next prime is 243486731. The reversal of 243486730 is 37684342.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 237498921 + 5987809 = 15411^2 + 2447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 243486730.

It is not an unprimeable number, because it can be changed into a prime (243486731) 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, 12174327 + ... + 12174346.

Almost surely, 2^243486730 is an apocalyptic number.

243486730 is a deficient number, since it is larger than the sum of its proper divisors (194789402).

243486730 is a wasteful number, since it uses less digits than its factorization.

243486730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24348680.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 243486730 is about 15604.0613303076. The cubic root of 243486730 is about 624.4415106922.

The spelling of 243486730 in words is "two hundred forty-three million, four hundred eighty-six thousand, seven hundred thirty".