28489834 has 8 divisors (see below), whose sum is σ = 43777188. Its totient is φ = 13897440.

The previous prime is 28489831. The next prime is 28489859. The reversal of 28489834 is 43898482.

It can be written as a sum of positive squares in 2 ways, for example, as 26040609 + 2449225 = 5103^2 + 1565^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28489831) 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, 173637 + ... + 173800.

Almost surely, 2^28489834 is an apocalyptic number.

28489834 is a deficient number, since it is larger than the sum of its proper divisors (15287354).

28489834 is a wasteful number, since it uses less digits than its factorization.

28489834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347480.

The product of its digits is 442368, while the sum is 46.

The square root of 28489834 is about 5337.5869079576. The cubic root of 28489834 is about 305.4194140295.

The spelling of 28489834 in words is "twenty-eight million, four hundred eighty-nine thousand, eight hundred thirty-four".