16497728 has 56 divisors (see below), whose sum is σ = 35844480. Its totient is φ = 7488000.

The previous prime is 16497713. The next prime is 16497731. The reversal of 16497728 is 82779461.

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 7 ways as a sum of consecutive naturals, for example, 65603 + ... + 65853.

It is an arithmetic number, because the mean of its divisors is an integer number (640080).

Almost surely, 2^16497728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16497728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17922240).

16497728 is an abundant number, since it is smaller than the sum of its proper divisors (19346752).

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

16497728 is a wasteful number, since it uses less digits than its factorization.

16497728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 345 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The square root of 16497728 is about 4061.7395288226. The cubic root of 16497728 is about 254.5704828822.

The spelling of 16497728 in words is "sixteen million, four hundred ninety-seven thousand, seven hundred twenty-eight".