28648245 has 16 divisors (see below), whose sum is σ = 45904320. Its totient is φ = 15256704.

The previous prime is 28648237. The next prime is 28648253. The reversal of 28648245 is 54284682.

It is an interprime number because it is at equal distance from previous prime (28648237) and next prime (28648253).

It is not a de Polignac number, because 28648245 - 2³ = 28648237 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17001 + ... + 18609.

It is an arithmetic number, because the mean of its divisors is an integer number (2869020).

Almost surely, 2^28648245 is an apocalyptic number.

It is an amenable number.

28648245 is a deficient number, since it is larger than the sum of its proper divisors (17256075).

28648245 is a wasteful number, since it uses less digits than its factorization.

28648245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2804.

The product of its digits is 122880, while the sum is 39.

The square root of 28648245 is about 5352.4055339632. The cubic root of 28648245 is about 305.9844389541.

The spelling of 28648245 in words is "twenty-eight million, six hundred forty-eight thousand, two hundred forty-five".