28102116 has 24 divisors (see below), whose sum is σ = 74939200. Its totient is φ = 8029152.

The previous prime is 28102103. The next prime is 28102147. The reversal of 28102116 is 61120182.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 28102092 and 28102101.

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, 167191 + ... + 167358.

Almost surely, 2^28102116 is an apocalyptic number.

It is an amenable number.

28102116 is an abundant number, since it is smaller than the sum of its proper divisors (46837084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28102116 is a wasteful number, since it uses less digits than its factorization.

28102116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334563 (or 334561 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 28102116 is about 5301.1428956405. The cubic root of 28102116 is about 304.0275973330.

Adding to 28102116 its reverse (61120182), we get a palindrome (89222298).

The spelling of 28102116 in words is "twenty-eight million, one hundred two thousand, one hundred sixteen".