28196589 has 8 divisors (see below), whose sum is σ = 39574240. Its totient is φ = 17808336.

The previous prime is 28196549. The next prime is 28196599. The reversal of 28196589 is 98569182.

It is a happy number.

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

It is not a de Polignac number, because 28196589 - 2⁷ = 28196461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28196549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247282 + ... + 247395.

It is an arithmetic number, because the mean of its divisors is an integer number (4946780).

Almost surely, 2^28196589 is an apocalyptic number.

It is an amenable number.

28196589 is a deficient number, since it is larger than the sum of its proper divisors (11377651).

28196589 is a wasteful number, since it uses less digits than its factorization.

28196589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494699.

The product of its digits is 311040, while the sum is 48.

The square root of 28196589 is about 5310.0460449981. The cubic root of 28196589 is about 304.3679070935.

The spelling of 28196589 in words is "twenty-eight million, one hundred ninety-six thousand, five hundred eighty-nine".