11421644 has 12 divisors (see below), whose sum is σ = 21525504. Its totient is φ = 5271504.

The previous prime is 11421629. The next prime is 11421661. The reversal of 11421644 is 44612411.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 109772 + ... + 109875.

It is an arithmetic number, because the mean of its divisors is an integer number (1793792).

Almost surely, 2^11421644 is an apocalyptic number.

It is an amenable number.

11421644 is a deficient number, since it is larger than the sum of its proper divisors (10103860).

11421644 is a wasteful number, since it uses less digits than its factorization.

11421644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219664 (or 219662 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 11421644 is about 3379.5922831016. The cubic root of 11421644 is about 225.2040552131.

The spelling of 11421644 in words is "eleven million, four hundred twenty-one thousand, six hundred forty-four".