28588985 has 16 divisors (see below), whose sum is σ = 36547200. Its totient is φ = 21394176.

The previous prime is 28588979. The next prime is 28588991. The reversal of 28588985 is 58988582.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28588979) and next prime (28588991).

It is a cyclic number.

It is not a de Polignac number, because 28588985 - 2⁶ = 28588921 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14276 + ... + 16154.

It is an arithmetic number, because the mean of its divisors is an integer number (2284200).

Almost surely, 2^28588985 is an apocalyptic number.

It is an amenable number.

28588985 is a deficient number, since it is larger than the sum of its proper divisors (7958215).

28588985 is a wasteful number, since it uses less digits than its factorization.

28588985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080.

The product of its digits is 1843200, while the sum is 53.

The square root of 28588985 is about 5346.8668395613. The cubic root of 28588985 is about 305.7733131076.

The spelling of 28588985 in words is "twenty-eight million, five hundred eighty-eight thousand, nine hundred eighty-five".