28230789 has 8 divisors (see below), whose sum is σ = 39622240. Its totient is φ = 17829936.

The previous prime is 28230781. The next prime is 28230793. The reversal of 28230789 is 98703282.

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

It is not a de Polignac number, because 28230789 - 2³ = 28230781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28230781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247582 + ... + 247695.

It is an arithmetic number, because the mean of its divisors is an integer number (4952780).

Almost surely, 2^28230789 is an apocalyptic number.

It is an amenable number.

28230789 is a deficient number, since it is larger than the sum of its proper divisors (11391451).

28230789 is a wasteful number, since it uses less digits than its factorization.

28230789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495299.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 28230789 is about 5313.2653801594. The cubic root of 28230789 is about 304.4909146046.

The spelling of 28230789 in words is "twenty-eight million, two hundred thirty thousand, seven hundred eighty-nine".