28814101 has 6 divisors (see below), whose sum is σ = 30121910. Its totient is φ = 27560808.

The previous prime is 28814077. The next prime is 28814129. The reversal of 28814101 is 10141882.

It can be written as a sum of positive squares in only one way, i.e., 26780625 + 2033476 = 5175^2 + 1426^2 .

It is not a de Polignac number, because 28814101 - 2¹⁹ = 28289813 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 (28814131) 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, 26706 + ... + 27763.

Almost surely, 2^28814101 is an apocalyptic number.

It is an amenable number.

28814101 is a deficient number, since it is larger than the sum of its proper divisors (1307809).

28814101 is an equidigital number, since it uses as much as digits as its factorization.

28814101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54515 (or 54492 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 28814101 is about 5367.8767683321. The cubic root of 28814101 is about 306.5737913196.

Adding to 28814101 its reverse (10141882), we get a palindrome (38955983).

The spelling of 28814101 in words is "twenty-eight million, eight hundred fourteen thousand, one hundred one".