16728453 has 24 divisors (see below), whose sum is σ = 28184000. Its totient is φ = 9557352.

The previous prime is 16728449. The next prime is 16728463. The reversal of 16728453 is 35482761.

It is not a de Polignac number, because 16728453 - 2² = 16728449 is a prime.

It is a super-2 number, since 2×16728453² = 559682279546418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16728433) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 378 + ... + 5796.

Almost surely, 2^16728453 is an apocalyptic number.

It is an amenable number.

16728453 is a deficient number, since it is larger than the sum of its proper divisors (11455547).

16728453 is an equidigital number, since it uses as much as digits as its factorization.

16728453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5446 (or 5429 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 16728453 is about 4090.0431538066. The cubic root of 16728453 is about 255.7517378760.

The spelling of 16728453 in words is "sixteen million, seven hundred twenty-eight thousand, four hundred fifty-three".