28354115 has 4 divisors (see below), whose sum is σ = 34024944. Its totient is φ = 22683288.

The previous prime is 28354111. The next prime is 28354121. The reversal of 28354115 is 51145382.

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 28354115 - 2² = 28354111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28354111) 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 3 ways as a sum of consecutive naturals, for example, 2835407 + ... + 2835416.

It is an arithmetic number, because the mean of its divisors is an integer number (8506236).

Almost surely, 2^28354115 is an apocalyptic number.

28354115 is a deficient number, since it is larger than the sum of its proper divisors (5670829).

28354115 is an equidigital number, since it uses as much as digits as its factorization.

28354115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670828.

The product of its digits is 4800, while the sum is 29.

The square root of 28354115 is about 5324.8582140748. The cubic root of 28354115 is about 304.9336593149.

Adding to 28354115 its reverse (51145382), we get a palindrome (79499497).

The spelling of 28354115 in words is "twenty-eight million, three hundred fifty-four thousand, one hundred fifteen".