11728450044 has 36 divisors (see below), whose sum is σ = 29650202400. Its totient is φ = 3909049920.

The previous prime is 11728450033. The next prime is 11728450049. The reversal of 11728450044 is 44005482711.

It is a happy number.

11728450044 is a `hidden beast` number, since 1 + 1 + 72 + 84 + 500 + 4 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 11728449990 and 11728450008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11728450049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 618829 + ... + 637499.

Almost surely, 2^11728450044 is an apocalyptic number.

It is an amenable number.

11728450044 is an abundant number, since it is smaller than the sum of its proper divisors (17921752356).

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

11728450044 is a wasteful number, since it uses less digits than its factorization.

11728450044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36130 (or 36125 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The spelling of 11728450044 in words is "eleven billion, seven hundred twenty-eight million, four hundred fifty thousand, forty-four".