28458877 has 2 divisors, whose sum is σ = 28458878. Its totient is φ = 28458876.

The previous prime is 28458863. The next prime is 28458887. The reversal of 28458877 is 77885482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20557156 + 7901721 = 4534^2 + 2811^2 .

It is a cyclic number.

It is not a de Polignac number, because 28458877 - 2¹⁹ = 27934589 is a prime.

It is a super-3 number, since 3×28458877³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 28458877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28458847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14229438 + 14229439.

It is an arithmetic number, because the mean of its divisors is an integer number (14229439).

Almost surely, 2^28458877 is an apocalyptic number.

It is an amenable number.

28458877 is a deficient number, since it is larger than the sum of its proper divisors (1).

28458877 is an equidigital number, since it uses as much as digits as its factorization.

28458877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1003520, while the sum is 49.

The square root of 28458877 is about 5334.6862138274. The cubic root of 28458877 is about 305.3087512177.

The spelling of 28458877 in words is "twenty-eight million, four hundred fifty-eight thousand, eight hundred seventy-seven".