28853887 has 2 divisors, whose sum is σ = 28853888. Its totient is φ = 28853886.

The previous prime is 28853857. The next prime is 28853893. The reversal of 28853887 is 78835882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28853887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28853887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28853807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14426943 + 14426944.

It is an arithmetic number, because the mean of its divisors is an integer number (14426944).

Almost surely, 2^28853887 is an apocalyptic number.

28853887 is a deficient number, since it is larger than the sum of its proper divisors (1).

28853887 is an equidigital number, since it uses as much as digits as its factorization.

28853887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 860160, while the sum is 49.

The square root of 28853887 is about 5371.5814244969. The cubic root of 28853887 is about 306.7148303107.

The spelling of 28853887 in words is "twenty-eight million, eight hundred fifty-three thousand, eight hundred eighty-seven".