28636613004 has 12 divisors (see below), whose sum is σ = 66818763704. Its totient is φ = 9545537664.

The previous prime is 28636612993. The next prime is 28636613011. The reversal of 28636613004 is 40031663682.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1193192197 + ... + 1193192220.

Almost surely, 2^28636613004 is an apocalyptic number.

It is an amenable number.

28636613004 is an abundant number, since it is smaller than the sum of its proper divisors (38182150700).

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

28636613004 is a wasteful number, since it uses less digits than its factorization.

28636613004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2386384424 (or 2386384422 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 28636613004 in words is "twenty-eight billion, six hundred thirty-six million, six hundred thirteen thousand, four".