243402306 has 24 divisors (see below), whose sum is σ = 566283600. Its totient is φ = 69543432.

The previous prime is 243402301. The next prime is 243402347. The reversal of 243402306 is 603204342.

It is a happy number.

It is a super-2 number, since 2×243402306² = 118489365132235272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243402301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 413656 + ... + 414243.

It is an arithmetic number, because the mean of its divisors is an integer number (23595150).

Almost surely, 2^243402306 is an apocalyptic number.

243402306 is an abundant number, since it is smaller than the sum of its proper divisors (322881294).

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

243402306 is a wasteful number, since it uses less digits than its factorization.

243402306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827918 (or 827911 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 243402306 is about 15601.3559026131. The cubic root of 243402306 is about 624.3693316125.

Adding to 243402306 its reverse (603204342), we get a palindrome (846606648).

The spelling of 243402306 in words is "two hundred forty-three million, four hundred two thousand, three hundred six".