16228849 has 24 divisors (see below), whose sum is σ = 20668200. Its totient is φ = 12628224.

The previous prime is 16228819. The next prime is 16228853. The reversal of 16228849 is 94882261.

It can be written as a sum of positive squares in 4 ways, for example, as 1940449 + 14288400 = 1393^2 + 3780^2 .

It is not a de Polignac number, because 16228849 - 2¹¹ = 16226801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16228819) by changing a digit.

It is an upside-down number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46327 + ... + 46675.

It is an arithmetic number, because the mean of its divisors is an integer number (861175).

Almost surely, 2^16228849 is an apocalyptic number.

It is an amenable number.

16228849 is a deficient number, since it is larger than the sum of its proper divisors (4439351).

16228849 is a wasteful number, since it uses less digits than its factorization.

16228849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 442 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 16228849 is about 4028.5045612485. The cubic root of 16228849 is about 253.1799092178.

The spelling of 16228849 in words is "sixteen million, two hundred twenty-eight thousand, eight hundred forty-nine".