11830923728 has 60 divisors (see below), whose sum is σ = 25161475500. Its totient is φ = 5357134848.

The previous prime is 11830923721. The next prime is 11830923733. The reversal of 11830923728 is 82732903811.

It can be written as a sum of positive squares in 6 ways, for example, as 61277584 + 11769646144 = 7828^2 + 108488^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11830923721) 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, 574148 + ... + 594396.

It is an arithmetic number, because the mean of its divisors is an integer number (419357925).

Almost surely, 2^11830923728 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 11830923728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12580737750).

11830923728 is an abundant number, since it is smaller than the sum of its proper divisors (13330551772).

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

11830923728 is a wasteful number, since it uses less digits than its factorization.

11830923728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20376 (or 20317 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 11830923728 in words is "eleven billion, eight hundred thirty million, nine hundred twenty-three thousand, seven hundred twenty-eight".