28315411 has 4 divisors (see below), whose sum is σ = 28350000. Its totient is φ = 28280824.

The previous prime is 28315381. The next prime is 28315423. The reversal of 28315411 is 11451382.

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 28315411 - 2¹⁷ = 28184339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28315481) 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, 16036 + ... + 17713.

It is an arithmetic number, because the mean of its divisors is an integer number (7087500).

Almost surely, 2^28315411 is an apocalyptic number.

28315411 is a deficient number, since it is larger than the sum of its proper divisors (34589).

28315411 is an equidigital number, since it uses as much as digits as its factorization.

28315411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34588.

The product of its digits is 960, while the sum is 25.

The square root of 28315411 is about 5321.2226978393. Note that the first 3 decimals coincide. The cubic root of 28315411 is about 304.7948490517.

Adding to 28315411 its reverse (11451382), we get a palindrome (39766793).

The spelling of 28315411 in words is "twenty-eight million, three hundred fifteen thousand, four hundred eleven".