11981488 has 30 divisors (see below), whose sum is σ = 23902116. Its totient is φ = 5818176.

The previous prime is 11981443. The next prime is 11981587. The reversal of 11981488 is 88418911.

11981488 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11981488.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21631 + ... + 22177.

Almost surely, 2^11981488 is an apocalyptic number.

It is an amenable number.

11981488 is a deficient number, since it is larger than the sum of its proper divisors (11920628).

11981488 is an equidigital number, since it uses as much as digits as its factorization.

11981488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629 (or 586 counting only the distinct ones).

The product of its digits is 18432, while the sum is 40.

The square root of 11981488 is about 3461.4286068038. The cubic root of 11981488 is about 228.8250604203.

The spelling of 11981488 in words is "eleven million, nine hundred eighty-one thousand, four hundred eighty-eight".