28965799 has 4 divisors (see below), whose sum is σ = 29373840. Its totient is φ = 28557760.

The previous prime is 28965791. The next prime is 28965821. The reversal of 28965799 is 99756982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28965799 - 2³ = 28965791 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 (28965791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203914 + ... + 204055.

It is an arithmetic number, because the mean of its divisors is an integer number (7343460).

Almost surely, 2^28965799 is an apocalyptic number.

28965799 is a deficient number, since it is larger than the sum of its proper divisors (408041).

28965799 is an equidigital number, since it uses as much as digits as its factorization.

28965799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408040.

The product of its digits is 2449440, while the sum is 55.

The square root of 28965799 is about 5381.9883872041. The cubic root of 28965799 is about 307.1108576928.

The spelling of 28965799 in words is "twenty-eight million, nine hundred sixty-five thousand, seven hundred ninety-nine".