28858901 has 2 divisors, whose sum is σ = 28858902. Its totient is φ = 28858900.

The previous prime is 28858889. The next prime is 28858903. The reversal of 28858901 is 10985882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17230801 + 11628100 = 4151^2 + 3410^2 .

It is a cyclic number.

It is not a de Polignac number, because 28858901 - 2¹⁰ = 28857877 is a prime.

Together with 28858903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28858903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14429450 + 14429451.

It is an arithmetic number, because the mean of its divisors is an integer number (14429451).

Almost surely, 2^28858901 is an apocalyptic number.

It is an amenable number.

28858901 is a deficient number, since it is larger than the sum of its proper divisors (1).

28858901 is an equidigital number, since it uses as much as digits as its factorization.

28858901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 28858901 is about 5372.0481196653. The cubic root of 28858901 is about 306.7325954399.

The spelling of 28858901 in words is "twenty-eight million, eight hundred fifty-eight thousand, nine hundred one".