28445103 has 24 divisors (see below), whose sum is σ = 42443856. Its totient is φ = 18345600.

The previous prime is 28445101. The next prime is 28445111. The reversal of 28445103 is 30154482.

It is not a de Polignac number, because 28445103 - 2¹ = 28445101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28445101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57688 + ... + 58178.

It is an arithmetic number, because the mean of its divisors is an integer number (1768494).

Almost surely, 2^28445103 is an apocalyptic number.

28445103 is a deficient number, since it is larger than the sum of its proper divisors (13998753).

28445103 is a wasteful number, since it uses less digits than its factorization.

28445103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695 (or 692 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 28445103 is about 5333.3950725593. The cubic root of 28445103 is about 305.2594871354.

Adding to 28445103 its reverse (30154482), we get a palindrome (58599585).

The spelling of 28445103 in words is "twenty-eight million, four hundred forty-five thousand, one hundred three".