11913928 has 32 divisors (see below), whose sum is σ = 24325560. Its totient is φ = 5437440.

The previous prime is 11913899. The next prime is 11913953. The reversal of 11913928 is 82931911.

11913928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10381284 + 1532644 = 3222^2 + 1238^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11913893 and 11913902.

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, 9498 + ... + 10678.

Almost surely, 2^11913928 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 11913928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12162780).

11913928 is an abundant number, since it is smaller than the sum of its proper divisors (12411632).

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

11913928 is a wasteful number, since it uses less digits than its factorization.

11913928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297 (or 1293 counting only the distinct ones).

The product of its digits is 3888, while the sum is 34.

The square root of 11913928 is about 3451.6558345235. The cubic root of 11913928 is about 228.3941576405.

The spelling of 11913928 in words is "eleven million, nine hundred thirteen thousand, nine hundred twenty-eight".