28442103 has 16 divisors (see below), whose sum is σ = 39050496. Its totient is φ = 18406080.

The previous prime is 28442101. The next prime is 28442123. The reversal of 28442103 is 30124482.

It is not a de Polignac number, because 28442103 - 2¹ = 28442101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28442101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13275 + ... + 15267.

It is an arithmetic number, because the mean of its divisors is an integer number (2440656).

Almost surely, 2^28442103 is an apocalyptic number.

28442103 is a deficient number, since it is larger than the sum of its proper divisors (10608393).

28442103 is a wasteful number, since it uses less digits than its factorization.

28442103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 28442103 is about 5333.1138183992. The cubic root of 28442103 is about 305.2487552277.

Adding to 28442103 its reverse (30124482), we get a palindrome (58566585).

The spelling of 28442103 in words is "twenty-eight million, four hundred forty-two thousand, one hundred three".