28102315 has 8 divisors (see below), whose sum is σ = 33779088. Its totient is φ = 22444320.

The previous prime is 28102303. The next prime is 28102331. The reversal of 28102315 is 51320182.

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

It is not a de Polignac number, because 28102315 - 2⁹ = 28101803 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1156 + ... + 7585.

It is an arithmetic number, because the mean of its divisors is an integer number (4222386).

Almost surely, 2^28102315 is an apocalyptic number.

28102315 is a deficient number, since it is larger than the sum of its proper divisors (5676773).

28102315 is an equidigital number, since it uses as much as digits as its factorization.

28102315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9389.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 28102315 is about 5301.1616651447. The cubic root of 28102315 is about 304.0283149700.

Adding to 28102315 its reverse (51320182), we get a palindrome (79422497).

The spelling of 28102315 in words is "twenty-eight million, one hundred two thousand, three hundred fifteen".