340642216 has 16 divisors (see below), whose sum is σ = 653558400. Its totient is φ = 166359984.

The previous prime is 340642201. The next prime is 340642217. The reversal of 340642216 is 612246043.

It is not an unprimeable number, because it can be changed into a prime (340642217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494776 + ... + 495463.

It is an arithmetic number, because the mean of its divisors is an integer number (40847400).

Almost surely, 2^340642216 is an apocalyptic number.

It is an amenable number.

340642216 is a deficient number, since it is larger than the sum of its proper divisors (312916184).

340642216 is a wasteful number, since it uses less digits than its factorization.

340642216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990288 (or 990284 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 340642216 is about 18456.4952252588. The cubic root of 340642216 is about 698.3923760543.

Adding to 340642216 its reverse (612246043), we get a palindrome (952888259).

The spelling of 340642216 in words is "three hundred forty million, six hundred forty-two thousand, two hundred sixteen".