11680428 has 48 divisors (see below), whose sum is σ = 29804544. Its totient is φ = 3544320.

The previous prime is 11680379. The next prime is 11680457. The reversal of 11680428 is 82408611.

11680428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11680395 and 11680404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5401 + ... + 7247.

It is an arithmetic number, because the mean of its divisors is an integer number (620928).

Almost surely, 2^11680428 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 11680428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14902272).

11680428 is an abundant number, since it is smaller than the sum of its proper divisors (18124116).

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

11680428 is a wasteful number, since it uses less digits than its factorization.

11680428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902 (or 1900 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 11680428 is about 3417.6641145671. The cubic root of 11680428 is about 226.8922101402.

The spelling of 11680428 in words is "eleven million, six hundred eighty thousand, four hundred twenty-eight".