28241015 has 8 divisors (see below), whose sum is σ = 36970128. Its totient is φ = 20538880.

The previous prime is 28240991. The next prime is 28241021. The reversal of 28241015 is 51014282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28241015 - 2⁶ = 28240951 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 7 ways as a sum of consecutive naturals, for example, 256682 + ... + 256791.

It is an arithmetic number, because the mean of its divisors is an integer number (4621266).

Almost surely, 2^28241015 is an apocalyptic number.

28241015 is a deficient number, since it is larger than the sum of its proper divisors (8729113).

28241015 is a wasteful number, since it uses less digits than its factorization.

28241015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513489.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 28241015 is about 5314.2276014488. The cubic root of 28241015 is about 304.5276752752.

Adding to 28241015 its reverse (51014282), we get a palindrome (79255297).

The spelling of 28241015 in words is "twenty-eight million, two hundred forty-one thousand, fifteen".