28493305 has 8 divisors (see below), whose sum is σ = 34987392. Its totient is φ = 22264368.

The previous prime is 28493303. The next prime is 28493321. The reversal of 28493305 is 50339482.

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 28493305 - 2¹ = 28493303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28493303) 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, 66049 + ... + 66478.

It is an arithmetic number, because the mean of its divisors is an integer number (4373424).

Almost surely, 2^28493305 is an apocalyptic number.

It is an amenable number.

28493305 is a deficient number, since it is larger than the sum of its proper divisors (6494087).

28493305 is a wasteful number, since it uses less digits than its factorization.

28493305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132575.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 28493305 is about 5337.9120449854. The cubic root of 28493305 is about 305.4318169067.

The spelling of 28493305 in words is "twenty-eight million, four hundred ninety-three thousand, three hundred five".