28977859 has 2 divisors, whose sum is σ = 28977860. Its totient is φ = 28977858.

The previous prime is 28977821. The next prime is 28977863. The reversal of 28977859 is 95877982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28977859 - 2⁷ = 28977731 is a prime.

It is not a weakly prime, because it can be changed into another prime (28977899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14488929 + 14488930.

It is an arithmetic number, because the mean of its divisors is an integer number (14488930).

Almost surely, 2^28977859 is an apocalyptic number.

28977859 is a deficient number, since it is larger than the sum of its proper divisors (1).

28977859 is an equidigital number, since it uses as much as digits as its factorization.

28977859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 55.

The square root of 28977859 is about 5383.1086743628. The cubic root of 28977859 is about 307.1534739641.

The spelling of 28977859 in words is "twenty-eight million, nine hundred seventy-seven thousand, eight hundred fifty-nine".