28708301 has 6 divisors (see below), whose sum is σ = 30011310. Its totient is φ = 27459608.

The previous prime is 28708243. The next prime is 28708313. The reversal of 28708301 is 10380782.

It can be written as a sum of positive squares in only one way, i.e., 27984100 + 724201 = 5290^2 + 851^2 .

It is not a de Polignac number, because 28708301 - 2¹⁰ = 28707277 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 (28708331) 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, 26606 + ... + 27663.

It is an arithmetic number, because the mean of its divisors is an integer number (5001885).

Almost surely, 2^28708301 is an apocalyptic number.

It is an amenable number.

28708301 is a deficient number, since it is larger than the sum of its proper divisors (1303009).

28708301 is an equidigital number, since it uses as much as digits as its factorization.

28708301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54315 (or 54292 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 28708301 is about 5358.0127846059. The cubic root of 28708301 is about 306.1981038816.

The spelling of 28708301 in words is "twenty-eight million, seven hundred eight thousand, three hundred one".