344634728 has 8 divisors (see below), whose sum is σ = 646190130. Its totient is φ = 172317360.

The previous prime is 344634721. The next prime is 344634739. The reversal of 344634728 is 827436443.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 255936004 + 88698724 = 15998^2 + 9418^2 .

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 (344634721) 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, 21539663 + ... + 21539678.

Almost surely, 2^344634728 is an apocalyptic number.

It is an amenable number.

344634728 is a deficient number, since it is larger than the sum of its proper divisors (301555402).

344634728 is a wasteful number, since it uses less digits than its factorization.

344634728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43079347 (or 43079343 counting only the distinct ones).

The product of its digits is 387072, while the sum is 41.

The square root of 344634728 is about 18564.3402252814. The cubic root of 344634728 is about 701.1102978453.

The spelling of 344634728 in words is "three hundred forty-four million, six hundred thirty-four thousand, seven hundred twenty-eight".