28408450828 has 48 divisors (see below), whose sum is σ = 53298653184. Its totient is φ = 13217610560.

The previous prime is 28408450789. The next prime is 28408450859. The reversal of 28408450828 is 82805480482.

It is an unprimeable number.

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, 702438 + ... + 741778.

It is an arithmetic number, because the mean of its divisors is an integer number (1110388608).

Almost surely, 2^28408450828 is an apocalyptic number.

It is an amenable number.

28408450828 is a deficient number, since it is larger than the sum of its proper divisors (24890202356).

28408450828 is a wasteful number, since it uses less digits than its factorization.

28408450828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39582 (or 39580 counting only the distinct ones).

The product of its (nonzero) digits is 1310720, while the sum is 49.

The spelling of 28408450828 in words is "twenty-eight billion, four hundred eight million, four hundred fifty thousand, eight hundred twenty-eight".