28545504826 has 16 divisors (see below), whose sum is σ = 43149918240. Its totient is φ = 14162541520.

The previous prime is 28545504817. The next prime is 28545504839. The reversal of 28545504826 is 62840554582.

It is a self number, because there is not a number n which added to its sum of digits gives 28545504826.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 81816 + ... + 252556.

It is an arithmetic number, because the mean of its divisors is an integer number (2696869890).

Almost surely, 2^28545504826 is an apocalyptic number.

28545504826 is a deficient number, since it is larger than the sum of its proper divisors (14604413414).

28545504826 is a wasteful number, since it uses less digits than its factorization.

28545504826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171389.

The product of its (nonzero) digits is 3072000, while the sum is 49.

The spelling of 28545504826 in words is "twenty-eight billion, five hundred forty-five million, five hundred four thousand, eight hundred twenty-six".