28846445 has 8 divisors (see below), whose sum is σ = 35809560. Its totient is φ = 22281280.

The previous prime is 28846423. The next prime is 28846453. The reversal of 28846445 is 54464882.

It can be written as a sum of positive squares in 4 ways, for example, as 12411529 + 16434916 = 3523^2 + 4054^2 .

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

It is not a de Polignac number, because 28846445 - 2²⁴ = 12069229 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 99326 + ... + 99615.

It is an arithmetic number, because the mean of its divisors is an integer number (4476195).

Almost surely, 2^28846445 is an apocalyptic number.

It is an amenable number.

28846445 is a deficient number, since it is larger than the sum of its proper divisors (6963115).

28846445 is a wasteful number, since it uses less digits than its factorization.

28846445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198975.

The product of its digits is 245760, while the sum is 41.

The square root of 28846445 is about 5370.8886601753. Note that the first 3 decimals coincide. The cubic root of 28846445 is about 306.6884587276.

The spelling of 28846445 in words is "twenty-eight million, eight hundred forty-six thousand, four hundred forty-five".