16728953 has 2 divisors, whose sum is σ = 16728954. Its totient is φ = 16728952.

The previous prime is 16728947. The next prime is 16728967. The reversal of 16728953 is 35982761.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16418704 + 310249 = 4052^2 + 557^2 .

It is a cyclic number.

It is not a de Polignac number, because 16728953 - 2¹⁰ = 16727929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16728953.

It is not a weakly prime, because it can be changed into another prime (16728983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8364476 + 8364477.

It is an arithmetic number, because the mean of its divisors is an integer number (8364477).

Almost surely, 2^16728953 is an apocalyptic number.

It is an amenable number.

16728953 is a deficient number, since it is larger than the sum of its proper divisors (1).

16728953 is an equidigital number, since it uses as much as digits as its factorization.

16728953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 16728953 is about 4090.1042773993. The cubic root of 16728953 is about 255.7542859218.

The spelling of 16728953 in words is "sixteen million, seven hundred twenty-eight thousand, nine hundred fifty-three".