11643628 has 6 divisors (see below), whose sum is σ = 20376356. Its totient is φ = 5821812.

The previous prime is 11643617. The next prime is 11643629. The reversal of 11643628 is 82634611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 11643628.

It is not an unprimeable number, because it can be changed into a prime (11643629) 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 as a sum of consecutive naturals, namely, 1455450 + ... + 1455457.

Almost surely, 2^11643628 is an apocalyptic number.

It is an amenable number.

11643628 is a deficient number, since it is larger than the sum of its proper divisors (8732728).

11643628 is a wasteful number, since it uses less digits than its factorization.

11643628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2910911 (or 2910909 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 11643628 is about 3412.2760732391. The cubic root of 11643628 is about 226.6536795712.

The spelling of 11643628 in words is "eleven million, six hundred forty-three thousand, six hundred twenty-eight".