11309380 has 12 divisors (see below), whose sum is σ = 23749740. Its totient is φ = 4523744.

The previous prime is 11309359. The next prime is 11309381. The reversal of 11309380 is 8390311.

It can be written as a sum of positive squares in 2 ways, for example, as 1982464 + 9326916 = 1408^2 + 3054^2 .

It is not an unprimeable number, because it can be changed into a prime (11309381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 282715 + ... + 282754.

It is an arithmetic number, because the mean of its divisors is an integer number (1979145).

Almost surely, 2^11309380 is an apocalyptic number.

11309380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11309380 is an abundant number, since it is smaller than the sum of its proper divisors (12440360).

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

11309380 is a wasteful number, since it uses less digits than its factorization.

11309380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565478 (or 565476 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 11309380 is about 3362.9421642365. The cubic root of 11309380 is about 224.4637765773.

Adding to 11309380 its reverse (8390311), we get a palindrome (19699691).

The spelling of 11309380 in words is "eleven million, three hundred nine thousand, three hundred eighty".