28736208804 has 24 divisors (see below), whose sum is σ = 68863348288. Its totient is φ = 9319851360.

The previous prime is 28736208773. The next prime is 28736208811. The reversal of 28736208804 is 40880263782.

It is a happy number.

It is a super-2 number, since 2×28736208804² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32360152 + ... + 32361039.

Almost surely, 2^28736208804 is an apocalyptic number.

It is an amenable number.

28736208804 is an abundant number, since it is smaller than the sum of its proper divisors (40127139484).

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

28736208804 is a wasteful number, since it uses less digits than its factorization.

28736208804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64721235 (or 64721233 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The spelling of 28736208804 in words is "twenty-eight billion, seven hundred thirty-six million, two hundred eight thousand, eight hundred four".