349358728 has 32 divisors (see below), whose sum is σ = 667065600. Its totient is φ = 171497088.

The previous prime is 349358701. The next prime is 349358729. The reversal of 349358728 is 827853943.

It is not an unprimeable number, because it can be changed into a prime (349358729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138325 + ... + 140827.

It is an arithmetic number, because the mean of its divisors is an integer number (20845800).

Almost surely, 2^349358728 is an apocalyptic number.

It is an amenable number.

349358728 is a deficient number, since it is larger than the sum of its proper divisors (317706872).

349358728 is a wasteful number, since it uses less digits than its factorization.

349358728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821 (or 2817 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 49.

The square root of 349358728 is about 18691.1403611444. The cubic root of 349358728 is about 704.2992067092.

The spelling of 349358728 in words is "three hundred forty-nine million, three hundred fifty-eight thousand, seven hundred twenty-eight".