28886887 has 2 divisors, whose sum is σ = 28886888. Its totient is φ = 28886886.

The previous prime is 28886881. The next prime is 28886917. The reversal of 28886887 is 78868882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28886887 - 2¹⁹ = 28362599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28886881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14443443 + 14443444.

It is an arithmetic number, because the mean of its divisors is an integer number (14443444).

Almost surely, 2^28886887 is an apocalyptic number.

28886887 is a deficient number, since it is larger than the sum of its proper divisors (1).

28886887 is an equidigital number, since it uses as much as digits as its factorization.

28886887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2752512, while the sum is 55.

The square root of 28886887 is about 5374.6522678216. The cubic root of 28886887 is about 306.8317150038.

The spelling of 28886887 in words is "twenty-eight million, eight hundred eighty-six thousand, eight hundred eighty-seven".