28895999 has 16 divisors (see below), whose sum is σ = 32901120. Its totient is φ = 25140000.

The previous prime is 28895963. The next prime is 28896011. The reversal of 28895999 is 99959882.

It is a cyclic number.

It is not a de Polignac number, because 28895999 - 2⁸ = 28895743 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 (28895959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34022 + ... + 34860.

It is an arithmetic number, because the mean of its divisors is an integer number (2056320).

Almost surely, 2^28895999 is an apocalyptic number.

28895999 is a deficient number, since it is larger than the sum of its proper divisors (4005121).

28895999 is a wasteful number, since it uses less digits than its factorization.

28895999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982.

The product of its digits is 4199040, while the sum is 59.

The square root of 28895999 is about 5375.4998837317. The cubic root of 28895999 is about 306.8639736623.

It can be divided in two parts, 2889 and 5999, that added together give a palindrome (8888).

The spelling of 28895999 in words is "twenty-eight million, eight hundred ninety-five thousand, nine hundred ninety-nine".