346708728 has 64 divisors (see below), whose sum is σ = 966796800. Its totient is φ = 115123680.

The previous prime is 346708723. The next prime is 346708757. The reversal of 346708728 is 827807643.

It is a happy number.

346708728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (346708723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55575 + ... + 61497.

It is an arithmetic number, because the mean of its divisors is an integer number (15106200).

Almost surely, 2^346708728 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 346708728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483398400).

346708728 is an abundant number, since it is smaller than the sum of its proper divisors (620088072).

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

346708728 is a wasteful number, since it uses less digits than its factorization.

346708728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6209 (or 6199 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 346708728 is about 18620.1162187565. The cubic root of 346708728 is about 702.5139052393.

The spelling of 346708728 in words is "three hundred forty-six million, seven hundred eight thousand, seven hundred twenty-eight".