28586871 has 8 divisors (see below), whose sum is σ = 42350960. Its totient is φ = 19057896.

The previous prime is 28586827. The next prime is 28586891. The reversal of 28586871 is 17868582.

It is not a de Polignac number, because 28586871 - 2⁶ = 28586807 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 (28586891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529360 + ... + 529413.

It is an arithmetic number, because the mean of its divisors is an integer number (5293870).

Almost surely, 2^28586871 is an apocalyptic number.

28586871 is a deficient number, since it is larger than the sum of its proper divisors (13764089).

28586871 is a wasteful number, since it uses less digits than its factorization.

28586871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058782 (or 1058776 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 28586871 is about 5346.6691500410. The cubic root of 28586871 is about 305.7657761638.

The spelling of 28586871 in words is "twenty-eight million, five hundred eighty-six thousand, eight hundred seventy-one".