28336445 has 8 divisors (see below), whose sum is σ = 34305336. Its totient is φ = 22468096.

The previous prime is 28336439. The next prime is 28336457. The reversal of 28336445 is 54463382.

It can be written as a sum of positive squares in 4 ways, for example, as 2116 + 28334329 = 46^2 + 5323^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28336445 - 2¹⁰ = 28335421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24512 + ... + 25641.

It is an arithmetic number, because the mean of its divisors is an integer number (4288167).

Almost surely, 2^28336445 is an apocalyptic number.

It is an amenable number.

28336445 is a deficient number, since it is larger than the sum of its proper divisors (5968891).

28336445 is a wasteful number, since it uses less digits than its factorization.

28336445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50271.

The product of its digits is 69120, while the sum is 35.

The square root of 28336445 is about 5323.1987563870. The cubic root of 28336445 is about 304.8703022862.

The spelling of 28336445 in words is "twenty-eight million, three hundred thirty-six thousand, four hundred forty-five".