28314445 has 16 divisors (see below), whose sum is σ = 35209728. Its totient is φ = 21844480.

The previous prime is 28314421. The next prime is 28314457. The reversal of 28314445 is 54441382.

It is not a de Polignac number, because 28314445 - 2¹¹ = 28312397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 15837 + ... + 17533.

It is an arithmetic number, because the mean of its divisors is an integer number (2200608).

Almost surely, 2^28314445 is an apocalyptic number.

It is an amenable number.

28314445 is a deficient number, since it is larger than the sum of its proper divisors (6895283).

28314445 is a wasteful number, since it uses less digits than its factorization.

28314445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820.

The product of its digits is 15360, while the sum is 31.

The square root of 28314445 is about 5321.1319284528. The cubic root of 28314445 is about 304.7913829160.

The spelling of 28314445 in words is "twenty-eight million, three hundred fourteen thousand, four hundred forty-five".