11728406784 has 36 divisors (see below), whose sum is σ = 31214668016. Its totient is φ = 3909468672.

The previous prime is 11728406783. The next prime is 11728406791. The reversal of 11728406784 is 48760482711.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (11728406783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7634914 + ... + 7636449.

Almost surely, 2^11728406784 is an apocalyptic number.

It is an amenable number.

11728406784 is an abundant number, since it is smaller than the sum of its proper divisors (19486261232).

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

11728406784 is an equidigital number, since it uses as much as digits as its factorization.

11728406784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15271382 (or 15271368 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 11728406784 in words is "eleven billion, seven hundred twenty-eight million, four hundred six thousand, seven hundred eighty-four".