11073391728 has 160 divisors (see below), whose sum is σ = 34744204800. Its totient is φ = 2966691840.

The previous prime is 11073391727. The next prime is 11073391741. The reversal of 11073391728 is 82719337011.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 11073391728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11073391727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1601623 + ... + 1608521.

It is an arithmetic number, because the mean of its divisors is an integer number (217151280).

Almost surely, 2^11073391728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11073391728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17372102400).

11073391728 is an abundant number, since it is smaller than the sum of its proper divisors (23670813072).

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

11073391728 is a wasteful number, since it uses less digits than its factorization.

11073391728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215 (or 7209 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The spelling of 11073391728 in words is "eleven billion, seventy-three million, three hundred ninety-one thousand, seven hundred twenty-eight".