28110002 has 18 divisors (see below), whose sum is σ = 44350047. Its totient is φ = 13361436.

The previous prime is 28110001. The next prime is 28110007. The reversal of 28110002 is 20001182.

It can be written as a sum of positive squares in only one way, i.e., 14055001 + 14055001 = 3749^2 + 3749^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3749.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28110001) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 172373 + ... + 172535.

Almost surely, 2^28110002 is an apocalyptic number.

28110002 is a deficient number, since it is larger than the sum of its proper divisors (16240045).

28110002 is an equidigital number, since it uses as much as digits as its factorization.

28110002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 28110002 is about 5301.8866453367. The cubic root of 28110002 is about 304.0560333578.

Multiplying 28110002 by its product of nonzero digits (32), we get a square (899520064 = 29992²).

Adding to 28110002 its reverse (20001182), we get a palindrome (48111184).

The spelling of 28110002 in words is "twenty-eight million, one hundred ten thousand, two".