28905914792208 has 120 divisors (see below), whose sum is σ = 80487480221568. Its totient is φ = 8933966694144.

The previous prime is 28905914792137. The next prime is 28905914792231. The reversal of 28905914792208 is 80229741950982.

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 23 ways as a sum of consecutive naturals, for example, 16931991 + ... + 18560822.

Almost surely, 2^{28905914792208} is an apocalyptic number.

It is an amenable number.

28905914792208 is an abundant number, since it is smaller than the sum of its proper divisors (51581565429360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28905914792208 is a wasteful number, since it uses less digits than its factorization.

28905914792208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35492909 (or 35492884 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 66.

The spelling of 28905914792208 in words is "twenty-eight trillion, nine hundred five billion, nine hundred fourteen million, seven hundred ninety-two thousand, two hundred eight".