28102316 has 12 divisors (see below), whose sum is σ = 53649960. Its totient is φ = 12773760.

The previous prime is 28102303. The next prime is 28102331. The reversal of 28102316 is 61320182.

It is a junction number, because it is equal to n+sod(n) for n = 28102291 and 28102300.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319301 + ... + 319388.

It is an arithmetic number, because the mean of its divisors is an integer number (4470830).

Almost surely, 2^28102316 is an apocalyptic number.

It is an amenable number.

28102316 is a deficient number, since it is larger than the sum of its proper divisors (25547644).

28102316 is a wasteful number, since it uses less digits than its factorization.

28102316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638704 (or 638702 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 28102316 is about 5301.1617594637. The cubic root of 28102316 is about 304.0283185762.

Adding to 28102316 its reverse (61320182), we get a palindrome (89422498).

The spelling of 28102316 in words is "twenty-eight million, one hundred two thousand, three hundred sixteen".