28445514 has 16 divisors (see below), whose sum is σ = 56946240. Its totient is φ = 9472640.

The previous prime is 28445479. The next prime is 28445519. The reversal of 28445514 is 41554482.

It is a happy number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (28445519) 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 in 7 ways as a sum of consecutive naturals, for example, 7834 + ... + 10874.

It is an arithmetic number, because the mean of its divisors is an integer number (3559140).

Almost surely, 2^28445514 is an apocalyptic number.

28445514 is an abundant number, since it is smaller than the sum of its proper divisors (28500726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28445514 is a wasteful number, since it uses less digits than its factorization.

28445514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4605.

The product of its digits is 25600, while the sum is 33.

The square root of 28445514 is about 5333.4336032241. The cubic root of 28445514 is about 305.2609573480.

Adding to 28445514 its reverse (41554482), we get a palindrome (69999996).

The spelling of 28445514 in words is "twenty-eight million, four hundred forty-five thousand, five hundred fourteen".