11328780 has 48 divisors (see below), whose sum is σ = 32465664. Its totient is φ = 2950080.

The previous prime is 11328743. The next prime is 11328787. The reversal of 11328780 is 8782311.

It is a happy number.

11328780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (11328787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385 + ... + 4775.

It is an arithmetic number, because the mean of its divisors is an integer number (676368).

Almost surely, 2^11328780 is an apocalyptic number.

11328780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11328780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16232832).

11328780 is an abundant number, since it is smaller than the sum of its proper divisors (21136884).

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

11328780 is a wasteful number, since it uses less digits than its factorization.

11328780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4446 (or 4444 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 11328780 is about 3365.8253074098. The cubic root of 11328780 is about 224.5920509151.

The spelling of 11328780 in words is "eleven million, three hundred twenty-eight thousand, seven hundred eighty".