349528728 has 16 divisors (see below), whose sum is σ = 873821880. Its totient is φ = 116509568.

The previous prime is 349528717. The next prime is 349528741. The reversal of 349528728 is 827825943.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 7281825 + ... + 7281872.

Almost surely, 2^349528728 is an apocalyptic number.

It is an amenable number.

349528728 is an abundant number, since it is smaller than the sum of its proper divisors (524293152).

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

349528728 is a wasteful number, since it uses less digits than its factorization.

349528728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14563706 (or 14563702 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 349528728 is about 18695.6874171559. The cubic root of 349528728 is about 704.4134268886.

It can be divided in two parts, 3495 and 28728, that added together give a palindrome (32223).

The spelling of 349528728 in words is "three hundred forty-nine million, five hundred twenty-eight thousand, seven hundred twenty-eight".