28889753 has 4 divisors (see below), whose sum is σ = 28900788. Its totient is φ = 28878720.

The previous prime is 28889743. The next prime is 28889767. The reversal of 28889753 is 35798882.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 15618304 + 13271449 = 3952^2 + 3643^2 .

It is a cyclic number.

It is not a de Polignac number, because 28889753 - 2⁶ = 28889689 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28889743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 893 + ... + 7653.

It is an arithmetic number, because the mean of its divisors is an integer number (7225197).

Almost surely, 2^28889753 is an apocalyptic number.

It is an amenable number.

28889753 is a deficient number, since it is larger than the sum of its proper divisors (11035).

28889753 is an equidigital number, since it uses as much as digits as its factorization.

28889753 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11034.

The product of its digits is 967680, while the sum is 50.

The square root of 28889753 is about 5374.9188831088. The cubic root of 28889753 is about 306.8418620602.

The spelling of 28889753 in words is "twenty-eight million, eight hundred eighty-nine thousand, seven hundred fifty-three".