8490335728 has 40 divisors (see below), whose sum is σ = 18935315840. Its totient is φ = 3612530880.

The previous prime is 8490335677. The next prime is 8490335729. The reversal of 8490335728 is 8275330948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8490335729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257118 + ... + 288253.

It is an arithmetic number, because the mean of its divisors is an integer number (473382896).

Almost surely, 2^8490335728 is an apocalyptic number.

It is an amenable number.

8490335728 is an abundant number, since it is smaller than the sum of its proper divisors (10444980112).

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

8490335728 is a wasteful number, since it uses less digits than its factorization.

8490335728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545525 (or 545519 counting only the distinct ones).

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

The square root of 8490335728 is about 92143.0177929940. The cubic root of 8490335728 is about 2040.0538022463.

The spelling of 8490335728 in words is "eight billion, four hundred ninety million, three hundred thirty-five thousand, seven hundred twenty-eight".