28343315 has 48 divisors (see below), whose sum is σ = 46539360. Its totient is φ = 16289280.

The previous prime is 28343311. The next prime is 28343323. The reversal of 28343315 is 51334382.

It is not a de Polignac number, because 28343315 - 2² = 28343311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28343311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34631 + ... + 35439.

It is an arithmetic number, because the mean of its divisors is an integer number (969570).

Almost surely, 2^28343315 is an apocalyptic number.

28343315 is a deficient number, since it is larger than the sum of its proper divisors (18196045).

28343315 is a wasteful number, since it uses less digits than its factorization.

28343315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852 (or 845 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 28343315 is about 5323.8440059791. The cubic root of 28343315 is about 304.8949382833.

Adding to 28343315 its reverse (51334382), we get a palindrome (79677697).

It can be divided in two parts, 28 and 343315, that added together give a palindrome (343343).

The spelling of 28343315 in words is "twenty-eight million, three hundred forty-three thousand, three hundred fifteen".