349925728 has 24 divisors (see below), whose sum is σ = 690711840. Its totient is φ = 174506880.

The previous prime is 349925713. The next prime is 349925731. The reversal of 349925728 is 827529943.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608 + ... + 26503.

It is an arithmetic number, because the mean of its divisors is an integer number (28779660).

Almost surely, 2^349925728 is an apocalyptic number.

It is an amenable number.

349925728 is a deficient number, since it is larger than the sum of its proper divisors (340786112).

349925728 is a wasteful number, since it uses less digits than its factorization.

349925728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28510 (or 28502 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 49.

The square root of 349925728 is about 18706.3018258554. The cubic root of 349925728 is about 704.6800204446.

The spelling of 349925728 in words is "three hundred forty-nine million, nine hundred twenty-five thousand, seven hundred twenty-eight".