340718728 has 32 divisors (see below), whose sum is σ = 731203200. Its totient is φ = 145804032.

The previous prime is 340718723. The next prime is 340718759. The reversal of 340718728 is 827817043.

It is not an unprimeable number, because it can be changed into a prime (340718723) 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 7 ways as a sum of consecutive naturals, for example, 36528 + ... + 44896.

It is an arithmetic number, because the mean of its divisors is an integer number (22850100).

Almost surely, 2^340718728 is an apocalyptic number.

It is an amenable number.

340718728 is an abundant number, since it is smaller than the sum of its proper divisors (390484472).

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

340718728 is a wasteful number, since it uses less digits than its factorization.

340718728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9109 (or 9105 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 340718728 is about 18458.5678751088. The cubic root of 340718728 is about 698.4446610176. Note that the first 3 decimals are identical.

The spelling of 340718728 in words is "three hundred forty million, seven hundred eighteen thousand, seven hundred twenty-eight".