11671988 has 12 divisors (see below), whose sum is σ = 20617632. Its totient is φ = 5781240.

The previous prime is 11671987. The next prime is 11671991. The reversal of 11671988 is 88917611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11671981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13208 + ... + 14063.

It is an arithmetic number, because the mean of its divisors is an integer number (1718136).

Almost surely, 2^11671988 is an apocalyptic number.

It is an amenable number.

11671988 is a deficient number, since it is larger than the sum of its proper divisors (8945644).

11671988 is a wasteful number, since it uses less digits than its factorization.

11671988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27382 (or 27380 counting only the distinct ones).

The product of its digits is 24192, while the sum is 41.

The square root of 11671988 is about 3416.4291299543. The cubic root of 11671988 is about 226.8375479973.

The spelling of 11671988 in words is "eleven million, six hundred seventy-one thousand, nine hundred eighty-eight".