28586887 has 8 divisors (see below), whose sum is σ = 34390400. Its totient is φ = 23213304.

The previous prime is 28586827. The next prime is 28586891. The reversal of 28586887 is 78868582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28586887 - 2²³ = 20198279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28586807) 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 in 7 ways as a sum of consecutive naturals, for example, 107337 + ... + 107602.

It is an arithmetic number, because the mean of its divisors is an integer number (4298800).

Almost surely, 2^28586887 is an apocalyptic number.

28586887 is a deficient number, since it is larger than the sum of its proper divisors (5803513).

28586887 is a wasteful number, since it uses less digits than its factorization.

28586887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214965.

The product of its digits is 1720320, while the sum is 52.

The square root of 28586887 is about 5346.6706462994. The cubic root of 28586887 is about 305.7658332093.

The spelling of 28586887 in words is "twenty-eight million, five hundred eighty-six thousand, eight hundred eighty-seven".