28364161 has 8 divisors (see below), whose sum is σ = 32598720. Its totient is φ = 24175248.

The previous prime is 28364153. The next prime is 28364173. The reversal of 28364161 is 16146382.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28364161 - 2³ = 28364153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28364261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10066 + ... + 12571.

It is an arithmetic number, because the mean of its divisors is an integer number (4074840).

Almost surely, 2^28364161 is an apocalyptic number.

It is an amenable number.

28364161 is a deficient number, since it is larger than the sum of its proper divisors (4234559).

28364161 is a wasteful number, since it uses less digits than its factorization.

28364161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22823.

The product of its digits is 6912, while the sum is 31.

The square root of 28364161 is about 5325.8014420367. The cubic root of 28364161 is about 304.9696682190.

The spelling of 28364161 in words is "twenty-eight million, three hundred sixty-four thousand, one hundred sixty-one".