243340690 has 32 divisors (see below), whose sum is σ = 458524800. Its totient is φ = 92805504.

The previous prime is 243340687. The next prime is 243340697. The reversal of 243340690 is 96043342.

It is a super-2 number, since 2×243340690² = 118429382819352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (243340697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78286 + ... + 81334.

It is an arithmetic number, because the mean of its divisors is an integer number (14328900).

Almost surely, 2^243340690 is an apocalyptic number.

243340690 is a deficient number, since it is larger than the sum of its proper divisors (215184110).

243340690 is a wasteful number, since it uses less digits than its factorization.

243340690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3426.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 243340690 is about 15599.3810774659. The cubic root of 243340690 is about 624.3166419071.

The spelling of 243340690 in words is "two hundred forty-three million, three hundred forty thousand, six hundred ninety".