3489728 has 28 divisors (see below), whose sum is σ = 7555992. Its totient is φ = 1585920.

The previous prime is 3489713. The next prime is 3489757. The reversal of 3489728 is 8279843.

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, 1775 + ... + 3182.

Almost surely, 2^3489728 is an apocalyptic number.

It is an amenable number.

3489728 is an abundant number, since it is smaller than the sum of its proper divisors (4066264).

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

3489728 is a wasteful number, since it uses less digits than its factorization.

3489728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980 (or 4970 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 3489728 is about 1868.0813686775. The cubic root of 3489728 is about 151.6807704685.

The spelling of 3489728 in words is "three million, four hundred eighty-nine thousand, seven hundred twenty-eight".