28054915 has 8 divisors (see below), whose sum is σ = 38475360. Its totient is φ = 19237632.

The previous prime is 28054903. The next prime is 28054921. The reversal of 28054915 is 51945082.

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 28054915 - 2¹¹ = 28052867 is a prime.

It is an unprimeable number.

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, 400750 + ... + 400819.

It is an arithmetic number, because the mean of its divisors is an integer number (4809420).

Almost surely, 2^28054915 is an apocalyptic number.

28054915 is a deficient number, since it is larger than the sum of its proper divisors (10420445).

28054915 is an equidigital number, since it uses as much as digits as its factorization.

28054915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801581.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 28054915 is about 5296.6890601582. The cubic root of 28054915 is about 303.8572845523.

Adding to 28054915 its reverse (51945082), we get a palindrome (79999997).

The spelling of 28054915 in words is "twenty-eight million, fifty-four thousand, nine hundred fifteen".