11809480 has 16 divisors (see below), whose sum is σ = 26571420. Its totient is φ = 4723776.

The previous prime is 11809453. The next prime is 11809493. The reversal of 11809480 is 8490811.

It can be written as a sum of positive squares in 2 ways, for example, as 10929636 + 879844 = 3306^2 + 938^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147579 + ... + 147658.

Almost surely, 2^11809480 is an apocalyptic number.

11809480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11809480 is an abundant number, since it is smaller than the sum of its proper divisors (14761940).

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

11809480 is a wasteful number, since it uses less digits than its factorization.

11809480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295248 (or 295244 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 11809480 is about 3436.4923977800. The cubic root of 11809480 is about 227.7247627736.

The spelling of 11809480 in words is "eleven million, eight hundred nine thousand, four hundred eighty".