11644988 has 6 divisors (see below), whose sum is σ = 20378736. Its totient is φ = 5822492.

The previous prime is 11644981. The next prime is 11644991. The reversal of 11644988 is 88944611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11644981) 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 as a sum of consecutive naturals, namely, 1455620 + ... + 1455627.

It is an arithmetic number, because the mean of its divisors is an integer number (3396456).

Almost surely, 2^11644988 is an apocalyptic number.

It is an amenable number.

11644988 is a deficient number, since it is larger than the sum of its proper divisors (8733748).

11644988 is a wasteful number, since it uses less digits than its factorization.

11644988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2911251 (or 2911249 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 11644988 is about 3412.4753478963. The cubic root of 11644988 is about 226.6625037682.

The spelling of 11644988 in words is "eleven million, six hundred forty-four thousand, nine hundred eighty-eight".