11984540 has 24 divisors (see below), whose sum is σ = 26036640. Its totient is φ = 4628288.

The previous prime is 11984527. The next prime is 11984543. The reversal of 11984540 is 4548911.

It is a junction number, because it is equal to n+sod(n) for n = 11984497 and 11984506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11984543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9752 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (1084860).

Almost surely, 2^11984540 is an apocalyptic number.

11984540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11984540 is an abundant number, since it is smaller than the sum of its proper divisors (14052100).

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

11984540 is a wasteful number, since it uses less digits than its factorization.

11984540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20701 (or 20699 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 11984540 is about 3461.8694371683. The cubic root of 11984540 is about 228.8444880238.

The spelling of 11984540 in words is "eleven million, nine hundred eighty-four thousand, five hundred forty".