28858897 has 4 divisors (see below), whose sum is σ = 28946416. Its totient is φ = 28771380.

The previous prime is 28858889. The next prime is 28858901. The reversal of 28858897 is 79885882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28858897 - 2³ = 28858889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28858807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43263 + ... + 43924.

It is an arithmetic number, because the mean of its divisors is an integer number (7236604).

Almost surely, 2^28858897 is an apocalyptic number.

It is an amenable number.

28858897 is a deficient number, since it is larger than the sum of its proper divisors (87519).

28858897 is an equidigital number, since it uses as much as digits as its factorization.

28858897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87518.

The product of its digits is 2580480, while the sum is 55.

The square root of 28858897 is about 5372.0477473679. The cubic root of 28858897 is about 306.7325812683.

The spelling of 28858897 in words is "twenty-eight million, eight hundred fifty-eight thousand, eight hundred ninety-seven".