346446728 has 8 divisors (see below), whose sum is σ = 649587630. Its totient is φ = 173223360.

The previous prime is 346446721. The next prime is 346446733. The reversal of 346446728 is 827644643.

It can be written as a sum of positive squares in only one way, i.e., 344547844 + 1898884 = 18562^2 + 1378^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (346446721) 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 as a sum of consecutive naturals, namely, 21652913 + ... + 21652928.

Almost surely, 2^346446728 is an apocalyptic number.

It is an amenable number.

346446728 is a deficient number, since it is larger than the sum of its proper divisors (303140902).

346446728 is a wasteful number, since it uses less digits than its factorization.

346446728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43305847 (or 43305843 counting only the distinct ones).

The product of its digits is 774144, while the sum is 44.

The square root of 346446728 is about 18613.0794872853. The cubic root of 346446728 is about 702.3369026520.

The spelling of 346446728 in words is "three hundred forty-six million, four hundred forty-six thousand, seven hundred twenty-eight".