28716101 has 2 divisors, whose sum is σ = 28716102. Its totient is φ = 28716100.

The previous prime is 28716073. The next prime is 28716139. The reversal of 28716101 is 10161782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17859076 + 10857025 = 4226^2 + 3295^2 .

It is a cyclic number.

It is not a de Polignac number, because 28716101 - 2¹⁴ = 28699717 is a prime.

It is a super-2 number, since 2×28716101² = 1649228913284402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28716001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14358050 + 14358051.

It is an arithmetic number, because the mean of its divisors is an integer number (14358051).

Almost surely, 2^28716101 is an apocalyptic number.

It is an amenable number.

28716101 is a deficient number, since it is larger than the sum of its proper divisors (1).

28716101 is an equidigital number, since it uses as much as digits as its factorization.

28716101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 28716101 is about 5358.7406169734. The cubic root of 28716101 is about 306.2258325508.

Adding to 28716101 its reverse (10161782), we get a palindrome (38877883).

The spelling of 28716101 in words is "twenty-eight million, seven hundred sixteen thousand, one hundred one".