16028449 has 2 divisors, whose sum is σ = 16028450. Its totient is φ = 16028448.

The previous prime is 16028443. The next prime is 16028461. The reversal of 16028449 is 94482061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8910225 + 7118224 = 2985^2 + 2668^2 .

It is an emirp because it is prime and its reverse (94482061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16028449 - 2⁹ = 16027937 is a prime.

It is a super-2 number, since 2×16028449² = 513822354691202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16028443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8014224 + 8014225.

It is an arithmetic number, because the mean of its divisors is an integer number (8014225).

Almost surely, 2^16028449 is an apocalyptic number.

It is an amenable number.

16028449 is a deficient number, since it is larger than the sum of its proper divisors (1).

16028449 is an equidigital number, since it uses as much as digits as its factorization.

16028449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 16028449 is about 4003.5545456507. The cubic root of 16028449 is about 252.1334694411.

The spelling of 16028449 in words is "sixteen million, twenty-eight thousand, four hundred forty-nine".