28408764905 has 32 divisors (see below), whose sum is σ = 35348866560. Its totient is φ = 21902561280.

The previous prime is 28408764883. The next prime is 28408764911. The reversal of 28408764905 is 50946780482.

It is not a de Polignac number, because 28408764905 - 2⁶ = 28408764841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14296322 + ... + 14298308.

It is an arithmetic number, because the mean of its divisors is an integer number (1104652080).

Almost surely, 2^28408764905 is an apocalyptic number.

It is an amenable number.

28408764905 is a deficient number, since it is larger than the sum of its proper divisors (6940101655).

28408764905 is a wasteful number, since it uses less digits than its factorization.

28408764905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The spelling of 28408764905 in words is "twenty-eight billion, four hundred eight million, seven hundred sixty-four thousand, nine hundred five".