28224415 has 16 divisors (see below), whose sum is σ = 35168256. Its totient is φ = 21722400.

The previous prime is 28224407. The next prime is 28224421. The reversal of 28224415 is 51442282.

It is not a de Polignac number, because 28224415 - 2³ = 28224407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32274 + ... + 33136.

It is an arithmetic number, because the mean of its divisors is an integer number (2198016).

Almost surely, 2^28224415 is an apocalyptic number.

28224415 is a deficient number, since it is larger than the sum of its proper divisors (6943841).

28224415 is a wasteful number, since it uses less digits than its factorization.

28224415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110.

The product of its digits is 5120, while the sum is 28.

The square root of 28224415 is about 5312.6655268330. The cubic root of 28224415 is about 304.4679967048.

Adding to 28224415 its reverse (51442282), we get a palindrome (79666697).

The spelling of 28224415 in words is "twenty-eight million, two hundred twenty-four thousand, four hundred fifteen".