28300288639 has 24 divisors (see below), whose sum is σ = 33438989808. Its totient is φ = 23877665280.

The previous prime is 28300288633. The next prime is 28300288649. The reversal of 28300288639 is 93688200382.

It is not a de Polignac number, because 28300288639 - 2⁵ = 28300288607 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 28300288592 and 28300288601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300288633) 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 23 ways as a sum of consecutive naturals, for example, 1113999 + ... + 1139119.

It is an arithmetic number, because the mean of its divisors is an integer number (1393291242).

Almost surely, 2^28300288639 is an apocalyptic number.

28300288639 is a deficient number, since it is larger than the sum of its proper divisors (5138701169).

28300288639 is a wasteful number, since it uses less digits than its factorization.

28300288639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25495 (or 25488 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

The spelling of 28300288639 in words is "twenty-eight billion, three hundred million, two hundred eighty-eight thousand, six hundred thirty-nine".