28828505247 has 16 divisors (see below), whose sum is σ = 39128945280. Its totient is φ = 18874192032.

The previous prime is 28828505239. The next prime is 28828505297. The reversal of 28828505247 is 74250582882.

It is a happy number.

It is not a de Polignac number, because 28828505247 - 2³ = 28828505239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28828505247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28828505207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94788 + ... + 258150.

It is an arithmetic number, because the mean of its divisors is an integer number (2445559080).

Almost surely, 2^28828505247 is an apocalyptic number.

28828505247 is a deficient number, since it is larger than the sum of its proper divisors (10300440033).

28828505247 is a wasteful number, since it uses less digits than its factorization.

28828505247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164422.

The product of its (nonzero) digits is 2867200, while the sum is 51.

The spelling of 28828505247 in words is "twenty-eight billion, eight hundred twenty-eight million, five hundred five thousand, two hundred forty-seven".