28830869 has 2 divisors, whose sum is σ = 28830870. Its totient is φ = 28830868.

The previous prime is 28830853. The next prime is 28830889. The reversal of 28830869 is 96803882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18190225 + 10640644 = 4265^2 + 3262^2 .

It is a cyclic number.

It is not a de Polignac number, because 28830869 - 2⁴ = 28830853 is a prime.

It is a super-2 number, since 2×28830869² = 1662438014590322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28830889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14415434 + 14415435.

It is an arithmetic number, because the mean of its divisors is an integer number (14415435).

Almost surely, 2^28830869 is an apocalyptic number.

It is an amenable number.

28830869 is a deficient number, since it is larger than the sum of its proper divisors (1).

28830869 is an equidigital number, since it uses as much as digits as its factorization.

28830869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 28830869 is about 5369.4384250124. The cubic root of 28830869 is about 306.6332486952.

The spelling of 28830869 in words is "twenty-eight million, eight hundred thirty thousand, eight hundred sixty-nine".