28846447 has 6 divisors (see below), whose sum is σ = 33556128. Its totient is φ = 24725484.

The previous prime is 28846423. The next prime is 28846453. The reversal of 28846447 is 74464882.

It is a de Polignac number, because none of the positive numbers 2^k-28846447 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 (28846487) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 294303 + ... + 294400.

It is an arithmetic number, because the mean of its divisors is an integer number (5592688).

Almost surely, 2^28846447 is an apocalyptic number.

28846447 is a deficient number, since it is larger than the sum of its proper divisors (4709681).

28846447 is an equidigital number, since it uses as much as digits as its factorization.

28846447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588717 (or 588710 counting only the distinct ones).

The product of its digits is 344064, while the sum is 43.

The square root of 28846447 is about 5370.8888463643. Note that the first 4 decimals coincide. The cubic root of 28846447 is about 306.6884658154.

The spelling of 28846447 in words is "twenty-eight million, eight hundred forty-six thousand, four hundred forty-seven".