11409380 has 48 divisors (see below), whose sum is σ = 26490240. Its totient is φ = 4105728.

The previous prime is 11409373. The next prime is 11409401. The reversal of 11409380 is 8390411.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7091 + ... + 8549.

It is an arithmetic number, because the mean of its divisors is an integer number (551880).

Almost surely, 2^11409380 is an apocalyptic number.

11409380 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 11409380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13245120).

11409380 is an abundant number, since it is smaller than the sum of its proper divisors (15080860).

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

11409380 is a wasteful number, since it uses less digits than its factorization.

11409380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508 (or 1506 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 11409380 is about 3377.7773757310. Note that the first 3 decimals coincide. The cubic root of 11409380 is about 225.1234219974.

Adding to 11409380 its reverse (8390411), we get a palindrome (19799791).

The spelling of 11409380 in words is "eleven million, four hundred nine thousand, three hundred eighty".