28489803 has 8 divisors (see below), whose sum is σ = 39296400. Its totient is φ = 18338208.

The previous prime is 28489789. The next prime is 28489817. The reversal of 28489803 is 30898482.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28489789) and next prime (28489817).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28489803 - 2⁴ = 28489787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28489823) 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 7 ways as a sum of consecutive naturals, for example, 163648 + ... + 163821.

It is an arithmetic number, because the mean of its divisors is an integer number (4912050).

Almost surely, 2^28489803 is an apocalyptic number.

28489803 is a deficient number, since it is larger than the sum of its proper divisors (10806597).

28489803 is a wasteful number, since it uses less digits than its factorization.

28489803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327501.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 28489803 is about 5337.5840040228. The cubic root of 28489803 is about 305.4193032531.

It can be divided in two parts, 28489 and 803, that added together give a palindrome (29292).

The spelling of 28489803 in words is "twenty-eight million, four hundred eighty-nine thousand, eight hundred three".