28359121 has 8 divisors (see below), whose sum is σ = 32494464. Its totient is φ = 24244800.

The previous prime is 28359109. The next prime is 28359127. The reversal of 28359121 is 12195382.

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 28359121 - 2¹¹ = 28357073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28359127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245 + ... + 7858.

It is an arithmetic number, because the mean of its divisors is an integer number (4061808).

Almost surely, 2^28359121 is an apocalyptic number.

It is an amenable number.

28359121 is a deficient number, since it is larger than the sum of its proper divisors (4135343).

28359121 is a wasteful number, since it uses less digits than its factorization.

28359121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10511.

The product of its digits is 4320, while the sum is 31.

The square root of 28359121 is about 5325.3282527934. The cubic root of 28359121 is about 304.9516038951.

The spelling of 28359121 in words is "twenty-eight million, three hundred fifty-nine thousand, one hundred twenty-one".