28061103 has 16 divisors (see below), whose sum is σ = 42854400. Its totient is φ = 15999456.

The previous prime is 28061093. The next prime is 28061123. The reversal of 28061103 is 30116082.

It is not a de Polignac number, because 28061103 - 2⁴ = 28061087 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28061103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28061123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10498 + ... + 12896.

It is an arithmetic number, because the mean of its divisors is an integer number (2678400).

Almost surely, 2^28061103 is an apocalyptic number.

28061103 is a deficient number, since it is larger than the sum of its proper divisors (14793297).

28061103 is a wasteful number, since it uses less digits than its factorization.

28061103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2966.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 28061103 is about 5297.2731664508. The cubic root of 28061103 is about 303.8796232483.

Adding to 28061103 its reverse (30116082), we get a palindrome (58177185).

The spelling of 28061103 in words is "twenty-eight million, sixty-one thousand, one hundred three".