28853857 has 2 divisors, whose sum is σ = 28853858. Its totient is φ = 28853856.

The previous prime is 28853849. The next prime is 28853887. The reversal of 28853857 is 75835882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26306641 + 2547216 = 5129^2 + 1596^2 .

It is a cyclic number.

It is not a de Polignac number, because 28853857 - 2³ = 28853849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28853807) 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 as a sum of consecutive naturals, namely, 14426928 + 14426929.

It is an arithmetic number, because the mean of its divisors is an integer number (14426929).

Almost surely, 2^28853857 is an apocalyptic number.

It is an amenable number.

28853857 is a deficient number, since it is larger than the sum of its proper divisors (1).

28853857 is an equidigital number, since it uses as much as digits as its factorization.

28853857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537600, while the sum is 46.

The square root of 28853857 is about 5371.5786320224. The cubic root of 28853857 is about 306.7147240113.

It can be divided in two parts, 288 and 53857, that added together give a palindrome (54145).

The spelling of 28853857 in words is "twenty-eight million, eight hundred fifty-three thousand, eight hundred fifty-seven".