11144988 has 18 divisors (see below), whose sum is σ = 28172144. Its totient is φ = 3714984.

The previous prime is 11144957. The next prime is 11145007. The reversal of 11144988 is 88944111.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 309583 = 11144988 / (1 + 1 + 1 + 4 + 4 + 9 + 8 + 8).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 154756 + ... + 154827.

Almost surely, 2^11144988 is an apocalyptic number.

11144988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11144988 is an abundant number, since it is smaller than the sum of its proper divisors (17027156).

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

11144988 is a wasteful number, since it uses less digits than its factorization.

11144988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309593 (or 309588 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 11144988 is about 3338.4109992630. The cubic root of 11144988 is about 223.3708696592.

The spelling of 11144988 in words is "eleven million, one hundred forty-four thousand, nine hundred eighty-eight".