340711728 has 80 divisors (see below), whose sum is σ = 1012244736. Its totient is φ = 96733440.

The previous prime is 340711621. The next prime is 340711733. The reversal of 340711728 is 827117043.

It is a happy number.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 51658 + ... + 57878.

Almost surely, 2^340711728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340711728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506122368).

340711728 is an abundant number, since it is smaller than the sum of its proper divisors (671533008).

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

340711728 is a wasteful number, since it uses less digits than its factorization.

340711728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6402 (or 6396 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 340711728 is about 18458.3782602914. The cubic root of 340711728 is about 698.4398778483.

The spelling of 340711728 in words is "three hundred forty million, seven hundred eleven thousand, seven hundred twenty-eight".