11888985 has 32 divisors (see below), whose sum is σ = 19918080. Its totient is φ = 6048000.

The previous prime is 11888983. The next prime is 11889011. The reversal of 11888985 is 58988811.

It is not a de Polignac number, because 11888985 - 2¹ = 11888983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11888983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65595 + ... + 65775.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^11888985 is an apocalyptic number.

11888985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11888985 is a deficient number, since it is larger than the sum of its proper divisors (8029095).

11888985 is a wasteful number, since it uses less digits than its factorization.

11888985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369.

The product of its digits is 184320, while the sum is 48.

The square root of 11888985 is about 3448.0407480191. The cubic root of 11888985 is about 228.2346576073.

The spelling of 11888985 in words is "eleven million, eight hundred eighty-eight thousand, nine hundred eighty-five".