28299163 has 4 divisors (see below), whose sum is σ = 28323928. Its totient is φ = 28274400.

The previous prime is 28299127. The next prime is 28299179. The reversal of 28299163 is 36199282.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28299163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28299263) 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, 10581 + ... + 12982.

It is an arithmetic number, because the mean of its divisors is an integer number (7080982).

Almost surely, 2^28299163 is an apocalyptic number.

28299163 is a deficient number, since it is larger than the sum of its proper divisors (24765).

28299163 is a wasteful number, since it uses less digits than its factorization.

28299163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24764.

The product of its digits is 46656, while the sum is 40.

The square root of 28299163 is about 5319.6957619774. The cubic root of 28299163 is about 304.7365385878.

The spelling of 28299163 in words is "twenty-eight million, two hundred ninety-nine thousand, one hundred sixty-three".