28648503 has 12 divisors (see below), whose sum is σ = 44564520. Its totient is φ = 17629776.

The previous prime is 28648489. The next prime is 28648517. The reversal of 28648503 is 30584682.

28648503 is a `hidden beast` number, since 2 + 8 + 648 + 5 + 0 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (28648489) and next prime (28648517).

It is not a de Polignac number, because 28648503 - 2⁶ = 28648439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28648573) 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 11 ways as a sum of consecutive naturals, for example, 122313 + ... + 122546.

It is an arithmetic number, because the mean of its divisors is an integer number (3713710).

Almost surely, 2^28648503 is an apocalyptic number.

28648503 is a deficient number, since it is larger than the sum of its proper divisors (15916017).

28648503 is a wasteful number, since it uses less digits than its factorization.

28648503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244878 (or 244875 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 28648503 is about 5352.4296352217. The cubic root of 28648503 is about 305.9853574949.

The spelling of 28648503 in words is "twenty-eight million, six hundred forty-eight thousand, five hundred three".