11909320 has 32 divisors (see below), whose sum is σ = 26966520. Its totient is φ = 4733440.

The previous prime is 11909309. The next prime is 11909351. The reversal of 11909320 is 2390911.

11909320 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 11792356 + 116964 = 3434^2 + 342^2 .

It is a congruent number.

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, 6060 + ... + 7780.

Almost surely, 2^11909320 is an apocalyptic number.

11909320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11909320 is an abundant number, since it is smaller than the sum of its proper divisors (15057200).

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

11909320 is a wasteful number, since it uses less digits than its factorization.

11909320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1901 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 25.

The square root of 11909320 is about 3450.9882642513. The cubic root of 11909320 is about 228.3647081874.

The spelling of 11909320 in words is "eleven million, nine hundred nine thousand, three hundred twenty".